Watch List notes:

Diocletian, 284-305. Follis (Bronze, 30 mm, 10.86 g, 6 h), Cyzicus, circa 297-299. IMP C DIOCLETIANVS P F AVG Laureate head of Diocletian to right. Rev. GENIO POPVLI ROMANI / KΓ Genius, naked but for cloak and wearing mural crown, holding patera in his right hand and cornucopiae with his left. RIC 12a. Well centered on a broad flan. Extremely fine.

From a Dutch collection.