Prusias II, king of Bithynia. AR tetradrachm. 183-149 BC. 16.99 g. 

Diademed head of Prusias right. 
BASILEWS PROYSIOY, Zeus standing left, holding wreath and sceptre. Eagle on thunderbolt in left field.
PKT monogram in upper left field, MHT monogram in lower left field.

RecGen 10.27; Berlin 1215; Kaye 172-177; Evans Coll. sale 327 (Cahn 1933, this coin))

With permission of Fritz Rudolf Künker GmbH auction 326, Lot 805, Oct. 2019