Rare antoninianus due to the rare type of galley reverse.
Roman Imperial
Postumus (260-269), Antoninianus 261, Lugdunum mint
Obverse: radiate, draped and cuirassed bust of Postumus right
IMP C POSTVMVS P F AVG
Obverse: galley to left
LAETITIA AVG
Weight 3.9 g