China
People's Republic gold Proof "Year of the Dragon" 150 Yuan (1/4 oz) 1988, KM198. Mintage: 7,600. Sealed in the original mint vinyl and sold with the case of issue and COA #2153.
https://coins.ha.com/itm/china/china-people-s-republic-gold-proof-year-of-the-dragon-150-yuan-1-4-oz-1988-/a/3084-31119.s?type=CoinArchives3084
HID02906262019
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Estimate: 500-700 USD