Coins and methods for producing coins

Details Coins and methods for producing coins Coins and methods for producing coins

A - Human Necessities

44

C

A44C 21/00 (2006.01)

Patent

CA 2172169

A coin comprises a substrate 20 having one or more coatlng layers 22,24 of a material or materials different from the substrate 20: a pattern or design is formed using a high power laser to layer localised melting and mixing or alloying of the coating layer and substrate, or of the superposed coatihg layers. This provides an observable or measurable effect, for establiching the authenticity of the coin.

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