Watch List notes:

Barcelona, Spain, 1 ducat, Charles I, ordinal QUINTVS, rare. CT-15. 3.32 grams. Well-detailed centers (cross fleury and arms, the latter slightly doubled) and most of legends, lustrous AU with small edge-split. Struck at the Barcelona mint to finance the 1535 expedition to Tunis against Barbarossa.

Estimate: $3000 - 4500