Lysimachos, 297-3281 BC. AR Tetradrachm, Lampsakos mint. 29 mm, 17.07 g. 

Diademed head of Alexander III right wearing horn of Ammon.
BASILEWS LUSIMACOU, Athena enthroned left, holding Nike in 
outstretched right hand, left elbow resting on shield, star
on throne, upright torch in left field. 

Thompson 43; Müller 381; SNG France 2538-9.

With permission of Roma Numismatics, Sept. 2014.
Estimate: £3000