271, Lot: 153. Estimate $5000. Sold for $12000. This amount does not include the buyer’s fee.

ITALY, Papale (Concilio di Pisa). Joannes XXIII (Baldassarre Cossa). Antipope, 1410-1419. AV Ducato (22mm, 3.50 g, 2h). Bologna mint. IOҺES : P P · VIGEXIMVS : TERCCIVS, coat-of-arms / · S · PETRVS · A POSTOLVS, St. Pietro stading facing, wearing nimbus crown and holding key and Gospel book. CNI X 2 var. (obv. legend); Muntoni 11 var. (same); Serafini 39 var. (legends); Berman 258; Friedberg 319; Biaggi 377. Good VF. Very rare.

Property of Princeton Economics acquired by Martin Armstrong. Ex Numismatica Ars Classica 14 (9 October 1998), lot 1010; Manuel Vidal Quadras y Ramon Collection (Bourgey, 15 June 1914), lot 61.