Russia
Nicholas I Proof Pattern Denga (1/2 Kopeck) 1840-C.П.Б. PR63 Red and Brown NGC, St. Petersburg mint, Bitkin-H940, Brekke-38. Obv. Crowned monogram. Rev. Date and value. Boldly struck with reddish-brown patina mixed with original golden color. The surfaces are fully mirrored and display only a few tiny marks. Very scarce.
HID02901242017
Estimate: 1000-1200 USD