Panama
Republic gold Proof "OAS 30th Anniversary" 500 Balboas 1978-FM PR68 Ultra Cameo NGC, Franklin mint, KM57, Fr-4. Mintage: 2,009. Featuring frosted North and South American continents, this large issue celebrates the 30th anniversary of the Organization of American States. AGW 1.2066 oz.
https://coins.ha.com/itm/panama/panama-republic-gold-proof-oas-30th-anniversary-500-balboas-1978-fm-pr68-ultra-cameo-ngc-/a/3096-31147.s?type=CoinArchives3096
HID02906262019
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Estimate: 1400-1600 USD