China
People's Republic gold "Mirrored Ring" Panda 100 Yuan (1 oz) 2000 MS69 NGC, KM1307, Cheng page 274, #1, Pan-326B. Well struck, with no apparent marks. The obverse is mostly frosted, while the fields around the Temple of Heaven, and the ring with date and legend are mirrored.
Estimate: 1700-2000 USD