Watch List notes:

Hostilian as Caesar (250-251 AD). AR Antoninianus. D/ C VALENS HOSTIL MES QVINTVS N C. Radiate, draped and cuirassed bust right. R/ MARTI PROPVGNATORI. Mars advancing right, holding spear and shield. RIC 177b. AR. g. 3.67 mm. 21.50 Scarce. About EF.