Watch List notes:

Helbing, Otto, Nachf. Münzen und Medaillen. Verkaufskatalog XXIII zu festen Presen. (München, no date). 26pp.; 800 lots. 26 x 20.5 cm; Fixed price list of Greek (50); Roman and Byzantine (156); early Medieval (16); coins and medals. Fine condition, a few pencil marks.

Duplicate from the Library of the American Numismatic Society.