Russia
R.S.F.S.R. silver Proof 10, 15, and 20 Kopecks 1923,
1) 10 Kopecks KM-Y80, PR67 Ultra Cameo NGC
2) 15 Kopecks KM-Y81, PR67 Cameo NGC
3) 20 Kopecks KM-Y82, PR67 Cameo NGC
An amazing group of Proofs, with all three brilliant white, with superb mirrored fields, bold definition, and with no notable flaws. Each of these pieces is the finest certified of the issue by NGC. A truly spectacular, and un-improvable, lot of Proofs.
Estimate: 10000-12000 USD