Lampsakos, Mysia, electrum stater, circa 412 BC, 15.18 g. 

Forepart of Pegasus left with curled wing, XT monogram below, all within vine wreath. 
Quadripartite incuse square. 

Traité II, 327; BMC 8; Baldwin pl. II, 12c (this coin); SNG von Aulock 1292; Kraay-Hirmer 727; Sear SG 3881.
Very rare.

With permission of Numismatica Ars Classica auction 96, Lot 1084, Oct. 2016.