Watch List notes:

Diocletian (AD 284-305), AE Nummus (27.5 x 27.1 mm 10.08 g 6h), London mint c. AD 303-305, IMP DIOCLETIANVS P F AVG, laureate, draped and cuirassed bust of Diocletian, seen from behind, rev. GENIO POPVLI ROMANI, Genius standing left holding patera and cornucopia (RIC 24 corrected; CT 3.01.003), almost extremely fine.
Ex Toone collection.

All recorded examples of RIC 24 have this bust type

(£150 - £250)