MACEDON, Neapolis. 4th century BC. Uniface AV Medaillion (10mm, 1.11 g). Head of nymph right; Π behind neck / Blank. For prototype, see reverse of AMNG III/2, 12 and HGC 3, 588. Holed for suspension in antiquity. VF.
Ex Belgica Collection (Classical Numismatic Group Electronic Auction 487, 10 March 2021), lot 97 (hammer $400).
Clearly, this ancient jewelry piece was based on the reverse type of Neapolis hemidrachms struck circa 375-350 BC. The jeweler apparently copied an example where only the Π of the ethnic was visible, and such off-center strikes of the prototype issue were not uncommon.