Probus (276-282), antoninianus. 3.76g, 22mm.
Obv: IMP C M AVR PROBVS P AVG; Radiate bust left in imperial mantle, holding sceptre surmounted by eagle.
Rev: CONCORD MILIT; Emperor standing right, clasping hand of Concordia, T in field between them, XXI in ex.
Not in RIC (see 656, different bust types); Alföldi type 26 no. 91.
Very rare! None on acsearch.