. For a long time I've been trying to assemble a set of four choice folles of the original tetrarchy struck at the London Mint. I recently added a follis of Diocletian and Galerius; mission accomplished ! Pictured below is the complete set of four. Diocletian, struck AD 303 - 305, AE Nummus: 10.17 gm, 28 mm, 6 h. Reverse: Genius of the Roman people holding patera and cornucopia, modius on head. RIC 28a. Maximian Herculius, struck circa AD 303, AE Nummus: 9.67 gm, 27 mm, 6 h. RIC 25. Galerius as Caesar, struck AD 303 - 305, AE Nummus: 10.46 gm, 29 mm, 6 h. RIC 33. Constantius I as Caesar, struck circa AD 300, AE Nummus: 8.99 gm, 28 mm, 6 h. RIC 22.