Constantius I. Chlorus (305-306), Lyon mint
Extremely rare, silvered Antoninanus.
Av: CONSTANTIVS NOB C
Rv: SAECVLI FELICIT/Felictas leaning on column
Mintmark (officina) II. RIC V-II 641 (only officina III listed)
RIC quotes to "Cohen 269", who not stated an Officina. Cohen quotes the coin from the Gréau collection, and also Gréau apparently did not state an officina. That means, Belfort (Belfort 233) saw the coin first in Gréau and it was subsequently taken by Cohen (Cohen 269 in the second edition). By the way no further picture or information avaiable.
From wildwinds (this coin):
CONSTANTIVS NOB C, radiate, draped and cuirassed bust right. SAECVLI FELICIT, Felicitas, draped, standing left, looking right, leaning left arm on column and raising right hand to head. Mintmark (officina): II. RIC V-II 641 (only officina III listed) = Cohen 269 (no officina given) = Gréau 4308 (ditto) = Belfort 233 (ditto).
Collection : Roman Imperial Denarii/Antoninianii/Argentii/Siliqua