Watch List notes:

Trebonianus Gallus. AD 251-253. AR Antoninianus (21mm, 3.88 g, 6h). Rome mint, 6th officina. Special emission, late AD 252. Radiate, draped, and cuirassed bust right / PAX AETERNA, Pax standing left, holding olive branch and transverse scepter. RIC IV 71; RSC 76. Toned, slightly granular surfaces. Good VF. Wonderful portrait.