Greiling Münz-Sammlung美國20 Dollar金幣卡
長x寬: 6.4×4.2cm
來源: Katz Auction 2023
卡片相關訊息請參考:
americanhistory.si.edu/collections/search/object/nmah_1088356
www.pcgs.com/coinfacts/coin/1911-20/9157
www.ngccoin.com/coin-explorer/united-states/gold-double-eagles/saint-gaudens-20-1907-1933/19157/1911-20-ms/?des=ms