Gordian III, AE22 of Deultum, Thrace. 

IMP GORDIANVS PIVS FEL AVG, radiate, draped, cuirassed bust right.
COL F L PAC DEVLT, Apollo, naked, holding branch and resting left arm on a lyre set on a column at his side.

Varbanov 2605 (this coin).

Note: the plate coin in Varbanov is numbered 2604 due to last minute additions.