Russia
U.S.S.R. 15 Kopeks 1975, KM-Y131, PR66 PCGS. A hint of blue patina, with mirrored fields and minor spots. We have doubts that this is a Proof. We think it is probably from a 1970 mint set, but still a very scarce item. (Sold as is, no return.).
Estimate: 400-600 USD