China
People's Republic gold Error "Basel International Coin Week" Panda Proof 1 Ounce Medal 1988 PR69 Ultra Cameo NGC, KMX-MB21. PAN-90A. Mintage: 550. An interesting Sino-Swiss medallic issue that was struck using dies intended for a platinum version, reading "1oz Pt" instead of "1oz Au". A key issue for these medallic Panda issues as such.
HID02901242017
Estimate: 3500-4000 USD