Watch List notes:

The Roman Empire

Constantine I, 307 – 337. Solidus, Ticinum 326, AV 4.50 g. Diademed head r. Rev. CONSTANTINVS AVG Interlaced wreaths; above, star and, in exergue, SMT. C 105. RIC 192. Alföldi 39. Depeyrot 19/1.
Very rare. A minor trace of restoration on the obverse, otherwise extremely fine

Ex NAC 11, 1998, 546 and Lanz 146, 2009, 624 sales.