Twentieth Century (Modern)

MEXICO. Mint Error -- 1987 Obverse/1986 Reverse -- 5 Onzas, 1987-Mo. Mexico City Mint. NGC PROOF-65 Ultra Cameo.

cf. KMX-MB23/MB20 (for obv./rev.). Serial number #XXXX. An interesting trial as it would seem, this proof issue features the 1987 obverse paired with the 1986 reverse, resulting in the piece having two different dates. Additionally, the edge numbering is merely four X's, indicating its trial or practice status. INCREDIBLY RARE and attractive, and a great mint oddity.

Estimate: $1000.00 - $2000.00