Proof Lincoln Cents
1990 1C No S, FS-101, PR68 Red Deep Cameo PCGS Secure. A popular modern mint error, this proof San Francisco issue is missing its mintmark. The intrigue of this variety is that the missing mintmark was apparently unnoticed despite the numerous quality checks that proof dies went through in 1990. The present coin is nearly pristine and displays stark cameo contrast. Under a strong loupe, tiny traces of the zinc core are visible on the edges of the letters in ERICA on the reverse.
HID02901242017