Diocletian, 284-305 Follis London circa 297, Æ 27mm., 7.42g. IMP C DIOCLETIANVS P F AVG Laureate head r. Rev. GENIO POPV LI ROMANI Genius standing l., holding patera and cornucopiae; in exergue, LON. RIC 1a. P.J.Casey, Carausius & Allectus: The British Usurpers (Yale  1994),  Pl 9.2 (this coin illustrated) 

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

Portrait reminiscent of Allectus. Very rare with LON mintmark. This is the first London issue following the reconquest of Britain by Constantius I and is the first ever use of the LON mintmark..

From the P.J. Casey Collection