Probus, Ticinum mint, 278-280 AD.,
silvered Æ Antoninianus (22-23 mm / 3,70 g),
Obv.: IMP C P PROBVS P F AVG , radiate, cuirassed bust of Probus right. (bust type F).
Rev.: SALVS AVG / A XXI , Salus seated left, feeding serpent rising from altar.
RIC V, II, 76, 562 ; Coh. 591 .