Switzerland
Basel. City gold "Oval Shield" Ducat ND (c. 1780) MS64 NGC, KM177, Fr-48a, HMZ-294c. Choice for the issue, with fully brilliant mint luster, delicate reflectively in the fields and a bit of strike softness in the centers; a definite condition rarity with only one piece certified finer by NGC.
Estimate: 2500-3000 USD