Constantine II caesar, 316 – 337. Solidus, Sirmium 321, AV 4.49 g. D N CONSTANTINVS IVN NOB CAES Laureate, draped and cuirassed bust r. Rev. FELIX PROC – ESSVS COS II Prince standing l., holding globe and baton; in exergue, SIRM. C 107 var. (without D N on obverse). RIC –. Alföldi 127 var. (without D N on obverse). Depeyrot 4/2. Exceedingly rare, apparently only the third specimen known. A minor edge nick at one o’clock on obverse, otherwise about extremely fine Privately purchased from Vinchon in 1967. From the Pierre Bastien collection.