Siphnos, Cycladen, AR drachm or tetrobol. 13 mm, 3.54 g. 
4th century BC.

Head of Apollo right, hair bound in a taenia.
S-I-F retrograde and anti-clockwise from lower right, 
eagle flying right, leaf or barley corn in upper right 
field, all within shallow incuse.

SNG Cop 747; Hoover HGC 702; BMC 5; Philipsen 1600-1601 (this coin); Mionnet II, 88 ("dove"). 

With permission of Numismatik Lanz auction 151, Lot 151, June 2011.