Watch List notes:

Crispus Caesar, 316 – 326. Solidus, Treveri 319-320, AV 4.45 g. FL IVL CRIS – PVS NOB CAES Laureate head r. Rev. SECVRITAS R – EI PVBLICAE Securitas standing facing, head r., leaning on column and placing r. hand on head; in exergue, PTR. C 134. RIC 247. Alföldi 459. Biaggi 2065 (this coin). Depeyrot 27/4.
Very rare. An edge nick at three o'clock on obverse, otherwise
about extremely fine / good very fine

Ex Hess 9 May 1951, 283 and NAC 49, 2008, B.d.B, 480 sales. From the Biaggi and Retired Banker collections.