China
People's Republic gold Proof "People's Heroes Monument" 400 Yuan 1979 PR69 Cameo NGC, KM5. Struck to commemorate the 30th anniversary of the People's Republic and typically sold in 4-piece sets. This example features the People's Heroes Monument, set against pale-gold, mirrored surfaces virtually devoid of imperfection.
https://coins.ha.com/itm/china/china-people-s-republic-gold-proof-people-s-heroes-monument-400-yuan-1979-pr69-cameo-ngc-/a/3092-39322.s?type=CoinArchives3092
HID02906262019
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Estimate: 800-1000 USD