RUSSIA. 5 Kopeks, 1791-AM. Annensk Mint. Catherine II (the Great). NGC Unc Details--Environmental Damage.
KM-C-59.2. Sharply detailed with rich reddish-brown coloration throughout. Close inspection reveals a few specks of likely removable residue on the reverse, and aside from that, we see can find no explanation for the "Environmental Damage" assignment.
Estimate: $50.00- $100.00