Perinthos, Thrace. AE20. ca. 350 BC. 5.9 g. 

Jugate heads of Serapis and Isis ("Zeus and Hera") right.
PERIN-QIWN above and beneath bull standing left, conjoined foreparts of two horses beneath its body, RTA monogram in left field. 

SNG Cop 722; Schönert-Geiss 40-51; SNRIS 2; Wiczay 2409.

With permission of Roma Numismatics E-Sale 32, Lot 287, Jan 2017.