this workshop is not listed in RIC, though several are now known.
Seller’s description--
Crispus, AE follis, Ticinum, 305-326 AD, (20.6mm, 2.75g., 220°).
Obverse: CRISPVS NOB CAES, laureate, cuirassed bust right
Reverse : DOMINORVM NOSTRORVM CAESS around VOT V within wreath, star below the V.
Mintmark TT
RIC VII Ticinum 135 var (unlisted officina), rated R5.