Russia
R.S.F.S.R. silver Proof 15 Kopecks 1922 PR67 Ultra Cameo NGC, Leningrad mint, KM-Y81. Obv. National arms. Rev. Date and value in circle. Brilliant white, with nicely frosted devices and fully mirrored fields. Quite rare in this Superb condition, and the only example certified in PR67 by NGC, with none finer.
Estimate: 2000-2500 USD