Bimetallic coin blank, particularly for coins and the like

Details Bimetallic coin blank, particularly for coins and the like Bimetallic coin blank, particularly for coins and the like

A - Human Necessities

44

C

40/18

A44C 21/00 (2006.01) B21K 25/00 (2006.01) B44B 5/00 (2006.01)

Patent

CA 2023409

ABSTRACT A coin blank, particularly for minting of coins and the like, is formed by an external element of metal or metal alloy having a central aperture, on the edge surface of which are cut perimetrally a series of spaced grooves, and by an internal element, of metal or metal alloy different from the former, on the edge surface of which is formed a perimetral ridge, said external and internal elements being coupled inseparably during the minting operation through the plastic flow of the material from said perimetral ridge into said grooves in said external element and through the firm fitting of the material from said ridge into the portions of the edge surface of said central aperture in said external element, provided between adjacent grooves.

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