Watch List notes:

Postumus Ӕ Sestertius. Lugdunum, AD 260-269. IMP C POSTVMVS P F AVG, laureate, draped and cuirassed bust right / VIRTVS AVG, Mars standing right holding spear and leaning on shield; S-C across fields. RIC 180; Bastien 52e; Banti 80. 21.31g, 32mm, 6h.

Good Very Fine. Very Rare.

From the inventory of a UK dealer.