Switzerland
Zurich. City gold Ducat 1767/1 AU58 ANACS, KM140, Fr-486a, HMZ-21161jj. Nearly fully detailed on a slightly wavy flan with bright orange-gold surfaces. Inspection of the date does reflect traces of extra metal beneath the second 7, but it's difficult to tell whether the date was just blundered or if it was previously another digit.From the Redwood Collection of Swiss Coins
Estimate: 800-1000 USD