Switzerland
Confederation gold Proof 1 Ounce, 1/4 Ounce and 1/10 Ounce, KM-MB3/4/5, Gem Mint State. The "Eternal Pact" issue, held in the original plastic holder. Mintage on the one ounce piece is reported to have been only 100.From The Formosa Collection.
Estimate: 1750-2250 USD