Watch List notes:

Trebonianus Gallus. A.D. 251-253. Æ as (21 mm, 8.49 g, 12 h). Rome, A.D. 251. IMP CAE C VIB TREB GALLVS AVG, laureate head of Trebonianus Gallus right / [LI]BERTVS AVG, S C across field, Libertas standing facing, head left, holding pileus and scepter. RIC 114c. Rare denomination for Gallus. Brown patina. Very fine.