Watch List notes:

SWITZERLAND, Kanton Schaffhausen. Schaffhausen. 15th century. AR Prager Groschen (26.5mm, 2.20 g). Struck 1424. Ram leaping from tower countermarked on a Bohemian groschen of Wenceslas III, with an earlier countermark of Ulm. HMZ 2-745; Krusy S3,1 (for Schaffhausen c/m) and U2,5 (for Ulm c/m). Countermarks VF and Fine. Host coin Fair. Rare.