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Obverse: Front (vertical): Portuguese text; chemist Roberto Duarte Silva; chemical symbols; serpent wrapped around a chalice; mortar and pestle registration device; coat of arms on Oberthur Iriseal OVI patch
Reverse: Back (vertical): Portuguese text; Trapiches - Ilha de Santo Antão (sugar cane press island of Santo Antão); mortar and pestle
The Royal Australian Mint's beloved Koala Series has returned with a third release and new design.
The Croatian National Bank release new gold and silver collector coins celebrating a love of Carnival.
The Royal Mint release the latest gold and silver proof coins in an exceptional collector's series.
Heritage Auctions
Tuesday, December 2, 2025
Heritage Auctions
Tuesday, December 2, 2025
Heritage Auctions
Wednesday, December 3, 2025
Whitman Expo
