The Lissner Collection, Lot: 953. Estimate $2500. Sold for $8000. This amount does not include the buyer’s fee.

SPAIN, Reino de España. Isabel II. 1833-1868. Proof AR 20 Reales (37mm, 25.97 g, 12h). Decimal real coinage. Madrid mint; im: 6 pointed star. Dated 1856. KM 609.2. In NGC encapsulation graded PF 64 WINGS APPROVED. Superb deeply toned violet-blue toned choice proof. Extremely rare and only piece ever graded. This is another “jewel in the crown.” This completes the three proof type of Isabella.