Got it in a cheap lot:
It is a silvered AE2 25mm silvered Maiorina.
OBV: DN CONSTA - NS PF AVG; pearl diademed, draped cuirassed bust r. holding globe in r. hand.
REV: FEL TEMP – REPARATIO; standing facing left on galley, holding Victory in his right hand and labarum in his left, Victory at helm;
EXE: TSΓ Thessalonika mint.
REF: RIC VIII – unrecorded type for mintmark TS_ only TS_* , should be between Thesalonika 111 and 112 or after 113, 348-350AD.
I think it is a very rare interesting issue of the second group first series.