Watch List notes:

Constantine I, 307 – 337. Solidus, Treveri 314, AV 4.38 g. CONSTANTI – NVS P F AVG Laureate head r. Rev. P M TRIB P COS II – II P P PRO COS The Prince seated l. on curule chair, holding globe and sceptre; in exergue, PTR. C 398. RIC 19. Alföldi 301. Depeyrot 21/4.
Lovely reddish tone, minor edge marks, otherwise extremely fine