Rare follis of Constantine I the Great minted in Thessalonica.
R3 in Roman Imperial Coinage catalogue.
Roman Imperial
Constantine I the Great (306–337), Follis 318-319, Thessalonica mint
Obverse: laureate, helmeted and cuirassed bust right
IMP CONSTANTINVS P F AVG
Reverse: laurel wreath enclosing VOT XX / MVLT / •XXX•, •TS•Δ• in exergue
Diameter 19 mm, weight 3.00 g