Watch List notes:

Hostilian, As Caesar, AD 250-251. Antoninianus (Silver, 23 mm, 3.74 g, 12 h), Rome, 251. C VALENS HOSTIL MES QVINTVS N C Radiate, draped and cuirassed bust of Hostilian to right. Rev. MARTI PROPVG Mars advancing right, holding spear in right hand and shield in left. Cohen 15. RIC 177b. With a portrait and a figure of Mars designed in fine style by a talented engraver. Very fine.

From the Trausnitz Collection, ex Künker 24, 23 March 1993, 548.