Watch List notes:

BACTRIA, Kingdom of, Eucratides I, (170-145 B.C.), silver tetradrachm, (16.83 g), obv. pith helmeted head of Eukratides to right with dotted border ornamented with bull's horn and ear, rev. the Dioskouroi on horseback prancing to right, each holding spear and palm, monogram of **PA*, in exergue **EUKRATIDOU*, around above **BASILEWS MEGALOU, (cf.S.7570. Mitchiner 1.177d, Bopearachchi Series 6Q nos 35-37 [p.205, pl.17], SNG ANS 468 var., HGC 12, 131). Grey patination, nearly extremely fine in high relief, toned, a rare variant.

Ex Spink Auctions, Sale 165, 8 October 2003 (lot 151).
See article Spencer Smith Celator, Vol.14 No.7 (July 2000), (P.6ff)