Ptolemy I, AE20 hemiobol. 323-285 BC, Alexandria mint, 7.40 g. 

Diademed head of Alexander III right, wearing elephant skin
headdress.
BASILEWS PTOLEMAIOU, eagle standing left, wings spread.

Sear 7765; Svoronos 238; SNG Cop 56).
 
Sold by Noble Numismatics Pty Ltd, Nov 2011