EP0065322A1 - Gold coloured alloy for coins - Google Patents

Gold coloured alloy for coins Download PDF

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Publication number
EP0065322A1
EP0065322A1 EP82200368A EP82200368A EP0065322A1 EP 0065322 A1 EP0065322 A1 EP 0065322A1 EP 82200368 A EP82200368 A EP 82200368A EP 82200368 A EP82200368 A EP 82200368A EP 0065322 A1 EP0065322 A1 EP 0065322A1
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Prior art keywords
coins
copper
aluminum
tin
gold
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EP82200368A
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German (de)
French (fr)
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EP0065322B1 (en
Inventor
Bruno Dr. Prinz
Manfred B. Dr. Rockel
Günther Dr. Rudolph
Ulrich Dr. Heubner
Hugo Zoebe
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Vereinigte Deutsche Metallwerke AG
Ver Deutsche Metallwerke AG
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Vereinigte Deutsche Metallwerke AG
Ver Deutsche Metallwerke AG
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C9/00—Alloys based on copper
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C9/00—Alloys based on copper
    • C22C9/01—Alloys based on copper with aluminium as the next major constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C9/00—Alloys based on copper
    • C22C9/02—Alloys based on copper with tin as the next major constituent
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12903—Cu-base component
    • Y10T428/1291—Next to Co-, Cu-, or Ni-base component

Definitions

  • the invention relates to the use of a copper-based alloy with 1 to 7% tin and 1 to 7% aluminum, but the sum of the percentages of aluminum and tin does not exceed 10%, the rest of copper including unavoidable, production-related impurities as a material for the production of coins or the like, which must have a golden hue and high tarnish resistance.
  • the coin authorities are therefore considering switching to newer, higher value coins from smaller pieces and distinguishing them from the existing highest value coins of the system by a different coin color.
  • Gold shades are particularly suitable for this because they combine certain values and most of the coins in circulation - at least the higher-quality ones - have silver shades.
  • Coin materials with gold-like colors are known and some have already been used. Almost without exception, these are copper-based alloys that e.g. are alloyed with 25% zinc, with 20% zinc and 1% nickel, with 5 to 6% aluminum and 2% nickel or with 2% aluminum and 6% nickel.
  • all these materials have the disadvantage that they lose their originally brilliant appearance relatively quickly in use and assume a matt and more brownish color. This disadvantage is accepted in the case of coins of low value. For higher-value coins, such a discoloration, which soon arises when used, is not acceptable. For this reason, silver-colored materials, preferably nickel or alloys with a relatively high nickel content, have been used for higher-value coins.
  • this object can be achieved if as a material for the production of coins or the like, a copper-based alloy with 1 to 7% tin and 1 to 7% aluminum, but the sum of the percentages of aluminum and tin does not exceed 10%, the rest of copper including unavoidable, production-related impurities are used.
  • the sum of the percentages of tin and aluminum expediently does not exceed 9%.
  • a copper alloy with 5 to 7% Sn and 1 to 3% Al is particularly suitable.
  • a copper alloy with 2.5 to 3.5% Sn and 1.5 to 5.5% Al can be used for the purpose according to the invention.
  • This pretreatment was necessary in order to be able to check the minted or non-minted coin blanks for tarnish resistance in the state in which they are also available in practice.
  • the coin blanks were also degreased to remove any fingerprints before the start of the start-up test.
  • Atmospheres of different aggressiveness were used as test media, namely:
  • test duration was 20 days.
  • the samples were then removed and assessed individually and separately for each test medium visually according to a point system with the marks 1 to 5, 1 meaning very good tarnish resistance and 5 very poor tarnish resistance with a strongly tarnished surface.
  • the gold shades were determined by determining color measures according to DIN 5033 and measures according to the color system DIN 6164 from the spectral reflectance.
  • the hue T, the saturation level S and the dark level D in the form of the "color symbol" (T: S: D) as a measure according to the color system DIN 6164 for the copper alloys examined are summarized in Table 2:
  • samples 5 and 7 have almost the same color saturation as the well-known coin alloy CuA16Ni2, but that their color is closer to rose gold, which gives the impression of a warmer gold tone, which is preferred for coins.
  • the sample 6 is more in the light yellow area, but in view of its good tarnish resistance it is still much more suitable as a coin material than the comparison materials.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Adornments (AREA)
  • Gloves (AREA)
  • Detergent Compositions (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Seeds, Soups, And Other Foods (AREA)
  • Electroplating And Plating Baths Therefor (AREA)
  • Chemically Coating (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)

Abstract

A copper-base alloy which consists essentially of 1 to 7% tin and 1 to 7% aluminum and contains aluminum and tin in a total not in excess of 10%, balance copper and inevitable impurities which are due to the manufacturer, is disclosed. It is useful as a coinage material of gold color.

Description

Die Erfindung bezieht sich auf die Verwendung einer Kupferbasislegierung mit 1 bis 7 % Zinn und 1 bis 7 % Aluminium, wobei jedoch die Summe der Prozentgehalte an Aluminium und Zinn 10 % nicht übersteigt, Rest Kupfer einschließlich unvermeidlicher, herstellungsbedingter Verunreinigungen als Werkstoff zur Herstellung von Münzen oder dergleichen, die einen goldenden Farbton und eine hohe Anlaufbeständigkeit aufweisen müssen.The invention relates to the use of a copper-based alloy with 1 to 7% tin and 1 to 7% aluminum, but the sum of the percentages of aluminum and tin does not exceed 10%, the rest of copper including unavoidable, production-related impurities as a material for the production of coins or the like, which must have a golden hue and high tarnish resistance.

Wegen der seit Jahren anhaltenden, weltweit mehr oder weniger starken Inflatiönstendenz und der erheblichen Zunahme der Geschäfte über Waren- und Dienstleistungsautomaten, ist ein Bedarf an höherwertigen Münzen entstanden. So wird beispielsweise in Deutschland schon einige Zeit die Einführung eines 10 DM-Stückes erwogen. Für höherwertige Münzen kommt in den meisten bestehenden Münzsystemen eine Unterscheidung von den vorhandenen höchsten Münzwerten durch entsprechende Vergrößerung der Münzstücke nicht in Betracht. Das höhere Gewicht und das größere Volumen würden nicht nur die Handhabung im Wortsinne "erschweren", sondern auch mit einem erheblichen Metallbedarf verbunden sein, wobei zu berücksichtigen ist, daß bei steigenden Preisen für die für Münzen geeigneten Metalle die Spanne zwischen Metallwert und Prägewert immer kleiner wird.Because of the persistent, more or less strong inflation trend worldwide and the considerable increase in business via vending and service machines, there has been a need for higher-value coins. For example, the introduction of a DM 10 piece has been considered for some time in Germany. In most existing coin systems, a distinction from the existing highest coin values by correspondingly enlarging the coin pieces is not considered for higher-value coins. The higher weight and the larger volume would not only "difficult" the handling in the literal sense, but would also be connected with a considerable metal requirement, whereby it must be taken into account that with increasing prices for the metals suitable for coins the range between metal value and minting value becomes smaller and smaller becomes.

Die Münzbehörden erwägen daher, bei neuen, höherwertigen Münzen auf kleinere Stücke überzugehen und diese von den vorhandenen höchstwertigen Münzen des Systems durch eine andere Münzfarbe zu unterscheiden. Hierfür eignen sich insbesondere Goldfarbtöne, weil damit bestimmte Wertvorstellungen verbunden werden und die meisten im Umlauf befindlichen Münzen - jedenfalls die höherwertigen - silberne Farbtöne aufweisen.The coin authorities are therefore considering switching to newer, higher value coins from smaller pieces and distinguishing them from the existing highest value coins of the system by a different coin color. Gold shades are particularly suitable for this because they combine certain values and most of the coins in circulation - at least the higher-quality ones - have silver shades.

Münzwerkstoffe mit goldähnlichen Farbtönen sind bekannt und teilweise auch schon benutzt worden. Dabei handelt es sich fast ausnahmslos um Kupferbasislegierungen, die z.B. mit 25 % Zink, mit 20 % Zink und 1 % Nickel, mit 5 bis 6 % Aluminium und 2 % Nickel oder mit 2 % Aluminium und 6 % Nickel legiert sind. Alle diese Werkstoffe haben jedoch den Nachteil, daß sie im Gebrauch verhältnismäßig rasch ihr ursprünglich brillantes Aussehen verlieren und einen matten und mehr ins Bräunliche gehenden Farbton annehmen. Dieser Nachteil wird im Falle von Münzen mit geringem Wert in Kauf genommen. Für höherwertige Münzen ist eine derartige, sich bei Gebrauch alsbald einstellende Verfärbung nicht akzeptabel. Deshalb hat man auch bisher für höherwertige Münzen silberfarbene Werkstoffe, vorzugsweise Nickel oder Legierungen mit einem verhältnismäßig hohen Nickelanteil, verwendet.Coin materials with gold-like colors are known and some have already been used. Almost without exception, these are copper-based alloys that e.g. are alloyed with 25% zinc, with 20% zinc and 1% nickel, with 5 to 6% aluminum and 2% nickel or with 2% aluminum and 6% nickel. However, all these materials have the disadvantage that they lose their originally brilliant appearance relatively quickly in use and assume a matt and more brownish color. This disadvantage is accepted in the case of coins of low value. For higher-value coins, such a discoloration, which soon arises when used, is not acceptable. For this reason, silver-colored materials, preferably nickel or alloys with a relatively high nickel content, have been used for higher-value coins.

Es besteht somit die Aufgabe, einen goldfarbenen Werkstoff für die Herstellung von Münzen oder dergleichen vorzuschlagen, der sich einerseits durch Gießen, Walzen und Prägen gut zu Münzen verarbeiten läßt und andererseits den ursprünglich vorhandenen goldendenen Farbton möglichst lange behält, d.h., der eine hohe Anlaufbeständigkeit aufweist.It is therefore the task of proposing a gold-colored material for the production of coins or the like, which can be processed well into coins on the one hand by casting, rolling and minting and on the other hand retains the originally existing gold-colored hue as long as possible, ie which has a high tarnish resistance .

Überraschenderweise hat sich herausgestellt, daß diese Aufgabe gelöst werden kann, wenn als Werkstoff zur Herstellung von Münzen oder dergleichen eine Kupferbasislegierung mit 1 bis 7 % Zinn und 1 bis 7 % Aluminium, wobei jedoch die Summe der Prozentgehalte an Aluminium und Zinn 10 % nicht übersteigt, Rest Kupfer einschließlich unvermeidlicher, herstellungsbedingter Verunreinigungen verwendet wird. Die Summe der Prozentgehalte an Zinn und Aluminium übersteigt zweckmäßigerweise nicht 9 %. Besonders geeignet ist eine Kupferlegierung mit 5 bis 7 % Sn und 1 bis 3 % Al. Ferner kann für den erfindungsgemäßen Zweck eine Kupferlegierung mit 2,5 bis 3,5 % Sn und 1,5 bis 5,5 % Al verwendet werden.Surprisingly, it has been found that this object can be achieved if as a material for the production of coins or the like, a copper-based alloy with 1 to 7% tin and 1 to 7% aluminum, but the sum of the percentages of aluminum and tin does not exceed 10%, the rest of copper including unavoidable, production-related impurities are used. The sum of the percentages of tin and aluminum expediently does not exceed 9%. A copper alloy with 5 to 7% Sn and 1 to 3% Al is particularly suitable. Furthermore, a copper alloy with 2.5 to 3.5% Sn and 1.5 to 5.5% Al can be used for the purpose according to the invention.

Zur Prüfung der Anlaufbeständigkeit wurden gestanzte Münzrohlinge aus der erfindungsgemäß zu verwendenden Kupferbasislegierung (Probe 5: 6 % Sn, 2 % Al; Probe 6: 5 % Al, 3 % Sn; Probe 7: 2 % Al, 3 % Sn), mit oder ohne Prägung zunächst folgender Vorbehandlung unterzogen:

  • Blankbeizen,
  • in Wasser Spülen,
  • mit einem Glättmittel behandeln,
  • ohne Abspülen in Reisschrot trocknen,
  • gegebenenfalls Prägen ohne weiteres Schmiermittel.
To test the tarnish resistance, punched coin blanks were made from the copper-based alloy to be used according to the invention (sample 5: 6% Sn, 2% Al; sample 6: 5% Al, 3% Sn; sample 7: 2% Al, 3% Sn), with or subjected to the following pretreatment without embossing:
  • Bright pickling,
  • rinse in water,
  • treat with a smoothing agent,
  • dry in rice grist without rinsing,
  • if necessary, stamp without further lubricant.

Diese Vorbehandlung war erforderlich, um die geprägten oder ungeprägten Münzrohlinge in dem Zustand auf Anlaufbeständigkeit prüfen zu können, in dem sie auch in der Praxis vorliegen. Um evtl. Fingerabdrücke vor Beginn des Anlauf testes zu entfernen, wurden die Münzrohlinge außerdem noch entfettet.This pretreatment was necessary in order to be able to check the minted or non-minted coin blanks for tarnish resistance in the state in which they are also available in practice. The coin blanks were also degreased to remove any fingerprints before the start of the start-up test.

Als Prüfmedien wurden Atmosphären verschiedener Aggressivität verwendet, und zwar:

Figure imgb0001
Atmospheres of different aggressiveness were used as test media, namely:
Figure imgb0001

Die Prüfdauer betrug 20 Tage. Danach wurden die Proben entnommen und einzeln und getrennt für jedes Prüfmedium visuell nach einem Punktsystem mit den Noten 1 bis 5 beurteilt, wobei 1 sehr gute Anlaufbeständigkeit und 5 sehr schlechte Anlaufbeständigkeit mit stark angelaufener Oberfläche bedeuten.The test duration was 20 days. The samples were then removed and assessed individually and separately for each test medium visually according to a point system with the marks 1 to 5, 1 meaning very good tarnish resistance and 5 very poor tarnish resistance with a strongly tarnished surface.

In gleicher Weise wurden Münzrohlinge aus den bereits genannten, einschlägig verwendeten Kupferbasislegierungen (Proben 1 bis 4) vorbehandelt und getestet. Die Ergebnisse sind in Tabelle 1 zusammengefaßt.

Figure imgb0002
Während die Proben 1 bis 4 in der Summe eine Bewertung zwischen 19 und 24 aufweisen, liegt die Probe 5 aus der erfindungsgemäß zu verwendenden Kupferbasislegierung mit einem Summenwert von 15 deutlich niedriger. Diese ist daher unter dem Gesichtspunkt der Anlaufbeständigkeit allen bisher als Münzwerkstoff verwendeten Kupferbasislegierungen eindeutig überlegen. Das gilt auch für die Proben 6 und 7, die in der Anlaufbeständigkeit zwar etwas schlechter sind, wegen des auf die Hälfte herabgesetzten Sn-Gehaltes aber wirtschaftlich interessanter sind und andere Oberflächenfarben ermöglichen.In the same way, coin blanks were pretreated and tested from the copper base alloys (samples 1 to 4) that were already used. The results are summarized in Table 1.
Figure imgb0002
 While the samples 1 to 4 have an overall rating between 19 and 24, the sample 5 made of the copper-based alloy to be used according to the invention is significantly lower with a total value of 15. From the point of view of tarnish resistance, this is therefore clearly superior to all copper-based alloys previously used as coin materials. This also applies to samples 6 and 7, which are somewhat worse in tarnish resistance, but are economically more interesting due to the reduced Sn content by half and enable other surface colors.

Die Goldfarbtöne wurden durch Bestimmung von Farbmaßzahlen nach DIN 5033 und Maßzahlen nach dem Farbsystem DIN 6164 aus dem spektralen Reflexionsgrad ermittelt. Der Buntton T, die Sättigungsstufe S und die Dunkelstufe D in Form des "Farbzeichens" (T:S:D) als Maßzahl nach dem Farbsystem DIN 6164 für die untersuchten Kupferlegierungen sind in Tabelle 2 zusammengestellt:

Figure imgb0003
In Figur 1, einem Ausschnitt aus dem DIN 6164-Farbdreieck, sind die DIN-Goldfarben (Δ), die goldähnlichen Farbtöne der oben genannten Münzlegierungen auf Kupferbasis (Proben 1 bis 4 = x) und der Goldfarbton der erfindungsgemäßen Legierung (Proben 5 bis 7 =
Figure imgb0004
) eingetragen.The gold shades were determined by determining color measures according to DIN 5033 and measures according to the color system DIN 6164 from the spectral reflectance. The hue T, the saturation level S and the dark level D in the form of the "color symbol" (T: S: D) as a measure according to the color system DIN 6164 for the copper alloys examined are summarized in Table 2:
Figure imgb0003
 In Figure 1, a section of the DIN 6164 color triangle, the DIN gold colors (Δ), the gold-like colors of the above-mentioned copper-based coin alloys (samples 1 to 4 = x) and the gold color of the alloy according to the invention (samples 5 to 7 =
Figure imgb0004
) entered.

Man erkennt, daß die Proben 5 und 7 fast die gleiche Farbsättigung wie die bekannte Münzlegierung CuA16Ni2 aufweisen, daß sie im Farbton aber näher am Rose-Gold liegt, was den Eindruck eines wärmeren Goldtones vermittelt, der für Münzen bevorzugt wird. Die Probe 6 liegt zwar mehr im hellgelben Bereich, ist im Hinblick auf ihre gute Anlaufbeständigkeit aber immer noch wesentlich besser als Münzwerkstoff geeignet, als die Vergleichswerkstoffe.It can be seen that samples 5 and 7 have almost the same color saturation as the well-known coin alloy CuA16Ni2, but that their color is closer to rose gold, which gives the impression of a warmer gold tone, which is preferred for coins. The sample 6 is more in the light yellow area, but in view of its good tarnish resistance it is still much more suitable as a coin material than the comparison materials.

Claims (4)

1. Verwendung einer Kupferbasislegierung mit 1 bis 7 % Zinn und 1 bis 7 % Aluminium, wobei jedoch die Summe der Prozentgehalte an Aluminium und Zinn 10 % nicht übersteigt, Rest Kupfer einschließlich unvermeidlicher, herstellungsbedingter Verunreinigungen als Werkstoff zur Herstellung von Münzen oder dergleichen, die einen goldenden Farbton und eine hohe Anlaufbeständigkeit aufweisen müssen.1. Use of a copper-based alloy with 1 to 7% tin and 1 to 7% aluminum, but the sum of the percentages of aluminum and tin does not exceed 10%, the rest of copper including unavoidable, production-related impurities as a material for the production of coins or the like must have a golden color and high tarnish resistance. 2. Verwendung einer Kupferlegierung nach Anspruch 1 mit der Maßgabe, daß die Summe der Prozentgehalte an Zinn und Aluminium 9 % nicht übersteigt.2. Use of a copper alloy according to claim 1 with the proviso that the sum of the percentages of tin and aluminum does not exceed 9%. 3. Verwendung einer Kupferlegierung nach Anspruch 1 mit der Maßgabe, daß sie 5 bis 7 % Sn und 1 bis 3 % Al enthält.3. Use of a copper alloy according to claim 1 with the proviso that it contains 5 to 7% Sn and 1 to 3% Al. 4. Verwendung einer Kupferlegierung nach Anspruch 1 mit der Maßgabe, daß sie 2,5 bis 3,5 % Sn und 1,5 bis 5,5 % Al enthält.4. Use of a copper alloy according to claim 1 with the proviso that it contains 2.5 to 3.5% Sn and 1.5 to 5.5% Al.
EP82200368A 1981-04-23 1982-03-25 Gold coloured alloy for coins Expired EP0065322B1 (en)

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Application Number Priority Date Filing Date Title
AT82200368T ATE10952T1 (en) 1981-04-23 1982-03-25 GOLD COLORED COIN MATERIAL.

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DE3116125 1981-04-23
DE3116125A DE3116125C2 (en) 1981-04-23 1981-04-23 Use of a copper alloy as a material for gold-colored coins

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EP0065322A1 true EP0065322A1 (en) 1982-11-24
EP0065322B1 EP0065322B1 (en) 1984-12-27

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DE (2) DE3116125C2 (en)
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WO1984003522A1 (en) * 1983-03-01 1984-09-13 Imi Kynoch Plc Alloy for coins and the like
EP0450883A2 (en) * 1990-04-02 1991-10-09 Sherritt Inc. Electroplated Blank for Coins, Medallions, Tokens or Tags

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CA1219708A (en) * 1984-05-01 1987-03-31 Michael J.H. Ruscoe Aureate coins, medallions and tokens
DE3428951A1 (en) * 1984-08-06 1986-02-13 Leybold-Heraeus GmbH, 5000 Köln WITH A COATING LAYER FROM GOLD OR A GOLD-CONTAINING MATERIAL-COVERED DECORATIVE USED ITEM AND METHOD FOR THE PRODUCTION THEREOF
USRE35624E (en) * 1990-01-05 1997-10-07 Kiilunen; David D. Wires made of copper-based alloy compositions
US5312696A (en) * 1991-09-16 1994-05-17 United Technologies Corporation Method for reducing fretting wear between contacting surfaces
US5472796A (en) * 1995-01-13 1995-12-05 Olin Corporation Copper alloy clad for coinage
US6089828A (en) * 1998-02-26 2000-07-18 United Technologies Corporation Coated article and method for inhibiting frictional wear between mating titanium alloy substrates in a gas turbine engine
JP4424810B2 (en) * 2000-03-27 2010-03-03 株式会社小松製作所 Sintered material
US6656606B1 (en) 2000-08-17 2003-12-02 The Westaim Corporation Electroplated aluminum parts and process of production
US6737175B2 (en) 2001-08-03 2004-05-18 Exxonmobil Research And Engineering Company Metal dusting resistant copper based alloy surfaces
SE525460C2 (en) * 2002-02-28 2005-02-22 Sandvik Ab Use of a copper alloy in carburizing environments
US7891898B2 (en) * 2005-01-28 2011-02-22 S.C. Johnson & Son, Inc. Cleaning pad for wet, damp or dry cleaning
AU2009202339C1 (en) 2008-06-13 2012-03-22 Monnaie Royale Canadienne/ Royal Canadian Mint Control of electromagnetic signals of coins by multi-ply plating technology

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GB268654A (en) * 1926-04-15 1927-04-07 Metallbank & Metallurg Ges Ag Copper-aluminium-alloys
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984003522A1 (en) * 1983-03-01 1984-09-13 Imi Kynoch Plc Alloy for coins and the like
EP0450883A2 (en) * 1990-04-02 1991-10-09 Sherritt Inc. Electroplated Blank for Coins, Medallions, Tokens or Tags
EP0450883A3 (en) * 1990-04-02 1992-12-30 Sherritt Gordon Limited Electroplated blank for coins, medallions and tokens

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Publication number Publication date
KR830010215A (en) 1983-12-26
DK179382A (en) 1982-10-24
US4436790A (en) 1984-03-13
DE3116125A1 (en) 1982-11-25
CA1209829A (en) 1986-08-19
EP0065322B1 (en) 1984-12-27
DE3261673D1 (en) 1985-02-07
ATE10952T1 (en) 1985-01-15
DE3116125C2 (en) 1983-02-10
NO155398B (en) 1986-12-15
NO821238L (en) 1982-10-25
FI69873B (en) 1985-12-31
ES8400495A1 (en) 1983-10-16
FI821220L (en) 1982-10-24
NO155398C (en) 1987-03-25
JPS57181350A (en) 1982-11-08
ES511622A0 (en) 1983-10-16
FI69873C (en) 1986-05-26
FI821220A0 (en) 1982-04-06

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