Watch List notes:

Constantine I, 307-337 Follis Thessalonica circa 319, Æ 18mm., 2.89g. Laureate and cuirassed bust r. Rev. Sol standing l. in center of plan of Roman camp, raising r. hand and holding globe in l.; in exergue, •TS•Γ•. C 658. RIC 66.

Very rare, attractive green patina, Extremely Fine/About Extremely Fine.