Russia - USSR 1 Rouble 1980 Error
Y# 177; N# 4598; Copper 13,58g.; XXII Summer Olympic Games, Moscow 1980 - Yury Dolgoruky Monument; coin was minted on an copper blank intended for minting foreign orders at the mint. The coinage was made by original stamps without applying edge inscription. Such coins were made by mint workers for the purpose of their further sale on the black market as a sample of real coins; AUNC.