Gordian III, Caesarea, Cappadocia, AR Drachm, year 4 (240-241 AD) 2.64 g. 

AV K M ANT GORDIANOC CEB, laureate head right.
MHTRO KAIC B N, Mount Argeos surmounted by star; date ET D below.

Bland (1991), S. 240, 50.1 (this coin); not in Sydenham.

Courtesy of Helios Auction 5, March 2011