Method of making aureate colored coins, medallions and tokens and products so made
AssigneeSherritt Gordon Mines Limited
InventorsMichael J. H. Ruscoe, Willie Seibt
Life of this patent
Estimating the term…
Abstract
An aureate coin, coin blank, medallion, medallion blank, token or token blank has a coin-shaped core with opposed faces and a peripheral side edge and of mintable metallic material. An electroplated coating of copper and tin completely encases the core and provides a golden appearance. The electroplated coating contains from about 8 to about 16% tin by weight and has a thickness of from about 10 to about 150 .mu.m.
Claims15
A process for producing an aureate coin having mint deformed insignia on at least one face, comprising:
- providing a coin core blank of the desired size and shape having opposed faces and a peripheral side edge of a first metallic material which is soft enough to be readily deformed by coin dies during minting;
- electroplating said coin core blank with a coating of a second metallic material, which is harder than said first metallic material and not readily deformed by coin dies, to completely encase said coin core blank with a coating having a face thickness from about 10 to about 150 .mu.m, said second metallic material comprising about 8 to about 16% tin by weight, with the balance copper;
- and
- forming insignia on said at least one face of the plated blank by at least one coin die deforming the surface thereof.
An electroplated aureate coin having insignia on at least one face formed by minting, comprising:
- a coin core blank having opposed faces and a peripheral side edge of a first metallic material which is soft enough to be deformed by coin dies during minting;
- and
- an electroplated coating of a second metallic material completely encasing said blank, said coating being of a material which, by itself, is not soft enough to be deformed by coin dies and contains from about 8 to about 16% tin by weight, with the balance copper, and having a face thickness of from about 10 to about 150 .mu.m, said insignia being formed by minting after the coating is electroplated.
Dependencies are inferred from the claim text.