Watch List notes:

Hostilian caesar, 251. Antoninianus 251, AR 2.99 g. C VALENS HOSTIL MES QVINTVS N C Radiate and draped bust r. Rev. MARTI PROPVGNATORI Mars striding r., holding spear in r. hand and shield in l. C 15. RIC 177b.
Extremely fine

Ex Peus sale 388, 2006, 1151.