FIELD: personal utensils.
SUBSTANCE: invention pertains to coins and may be used in currency circulation and in production of chips. The coin has internal cavity with moving elements. Each moving element is made as sounding part of a self-sounding musical instrument and is arranged with a capability of colliding with the frame of the coin. The coin acquires properties peculiar to the miniature musical instrument.
EFFECT: invention increases emissive profit by assigning the coin new application properties and improves protection against forgery and loss.
4 dwg
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