31 CFR §100.12
- (a)Definitions.
- (1)Fused coins are U.S. coins which are melted to the extent that they are bonded together.
- (2)Mixed coins are U.S. coins of several alloy categories which are presented together, but are readily and clearly identifiable as U.S. coins.
- (b)Fused and mixed coins. The United States Mint will not accept fused or mixed coins for redemption.