Russia
Nicholas I copper Proof Pattern Denga (1/2 Kopeck) 1849 E.M. PR65 Red and Brown NGC, Ekaterinburg mint, Bitkin-610 (R2). Obv. Crowned monogram. Rev. Crowned date and value. Lustrous, golden brown patina, with a sharp strike and no significant flaws. A very rare issue with few, if any, recent records of sales. This is the only example of the issue certified by either NGC, or PCGS.
Estimate: 4000-5000 USD