Добрый день!
Что-то репутация упала.
В обоснование своего ПРЕДПОЛОЖЕНИЯ приведу пример другой монеты и периода Греческого мира.
Вот обычный тип, довольно-таки частая
А вот с буквой П под портретом
И описание с аукциона:
«Sicily, Litra, Katane, c. 461-413 BC AR (g 0,80 mm 11 h 6) Head of Silenos l., wearing ivy wreath at r., Π, dotted border, Rv. KATANAIΩN, winged thunderbolt at sides, two shields. Boehringer, Kataneische Li 6 Mirone 82 SNG Copenhagen 182 SNG ANS -.
Very rare, old cabinet tone, high conservation for the typology, extremely
.
The coin is signed Π, for the artist Prokles, whose full signature is known on tetradrachms at Katane in this period. This Prokles is thought to be the same artist who engraved a number of magnificent didrachm, hemidrachm, and litra dies at Naxos and maybe these works suggest that he lived in Naxos.».
