Watch List notes:

KINGS of CHARACENE. Attambelos I. 47/46-25/24 BC. BI Tetradrachm (26mm, 15.23 g, 12h). Hill Series B. Charax-Spasinu mint. Uncertain SE date. Diademed head right / Herakles seated left, holding club; monogram above arm, Π below arm; [date in exergue]. Hill, Attambelos –; Alram –; BMC –; DCA 485 (for series); cf. CNG E-286, lot 193 and E-283, lot 149 (same monogram and letter under arm, though with readable dates and misattributed as Hill Series C). VF, light encrustation on the reverse. Very rare.

From the J. P. Righetti Collection. Ex Münzen und Medaillen list 411 (May 1979), no. 3.