Watch List notes:

The Geoffrey Cope Collection of Ancient Greek and Roman Bronzes. The Roman Empire. Postumus, 260 – 269.
Description
Double sestertius, Treviri circa late 260-late 261, Æ 35 mm, 42.45 g. IMP C M CASS LAT POSTVMVS P F AVG Radiate, draped and cuirassed bust r. Rev. LAETITIA AVG Galley with four rowers on waves to r.; below, S C.
Reference
C 179
RIC 95
Bastien 81 (Colonia)
Condition
A bold portrait struck on a medallic thick flan. Dark green patina and extremely fine