Andros, Cyclades, AR didrachm, 3rd-2nd c. BC. 6.89 g. 

Head of Dionysos right, wreathed with ivy
ANDRIWN, Dionysos standing left by tripod altar, holding kantharos and thyrsos. 

BMC 2. 
Extremely rare. 

With permission of M&M Numismatics Ltd, The New York Sale XIV, Lot 102, Jan 2007.