Naxos, Cyclades. AR Tetartemorion, ca 520-470 BC. AR  6 mm, 0.17 g. 

Kantharos with bunches of grapes on each handle, ivy leaf above.
Quadripartite incuse square.

Sheedy 66; Hoover HGC 627; Borrell p. 134 in NC 1844.

With permission of cngcoins.com, auction 376, Lot 117, June 2016