Antoninus Pius AE25 of the Koinon of Macedonia. AD 138-161, 9.98 g.

KAICAR ANTWNEINOC, laureate, draped bust right.
KOINON MAKEDONWN, Winged thunderbolt. 

BMC 155; Varbanov 3036; Sear GIC 1349.

With permission of ArtCoins Roma, Dec. 2011
Estimate: 200 EUR.