Watch List notes:

Philip I. A.D. 244-249. AR antoninianus (24.81 mm, 4.14 g, 2 h). Rome mint, struck A.D. 249. IMP PHILIPPVS AVG, radiate, draped and cuirassed bust right / SAECVLARES AVGG, cippus inscribed COS III. RIC 24c; RSC 24. VF, toned. 

Ludi Saeculares (Secular Games) issue, commemorating the 1000th anniversary of the founding Rome.