Watch List notes:

Helbing, Otto, Nachf. Münzen und Medaillen. Verkaufs-Katalog XXI. (München, no date (1935)). 32pp.; 880 lots. 26 x 20.5 cm. Fixed price list of medieval, modern (Europe and world) coins; medals; orders and decorations. Fine condition, on back poststamp of 1935 clearly visible. .

Duplicate from the Library of the American Numismatic Society.