China
People's Republic gold "Mirrored Ring" Panda 100 Yuan (1 oz) 2000 MS69 NGC, KM1307, Cheng page 274, #1, Pan-326B. Nearly perfectly frosted with a mirrored obverse ring near the periphery. The Standard Catalog of World Coins notes that domestic Chinese examples were struck with mirror fields, while overseas examples were struck with frosted fields.
HID02901242017
Estimate: 1400-1800 USD