Diocletian
Follis
PROVIDENTIA DEORVM QVIES AVGG
D N DIOCLETIANO FELICISSIMO SEN AVG
Consular bust of Diocletian with the trabea on the right. Holding an olive branch with the right hand and the mappa with the left hand.
PROVIDENTIA DEORVM QVIES AVGG
Providentia standing left, draped, raising her right hand. Quies standing right in front of her, holding a laurel branch with the right hand and a long scepter with the left hand.
Photos from coin sold as modern fake by London Ancient Coins, link to the sale: https://www.acsearch.info/search.html?id=3221536, link to their website: https://www.vcoins.com/en/stores/london_ancient_coins-89/ancient-coins/Default.aspx?#!/Home.
Imitation of the RIC ? impossible to read a mint mark and therefore attribuate a RIC number. Informations of weight and diameter, die axis: 12h, from London Ancient Coins.
Antoninianus
CONCORDIA MILITVM
IMP C C VAL DIOCLETIANVS AVG
Radiate and draped bust of Diocletian right.
CONCORDIA MI - LITVM
Diocletian standing left, holding a parazonium with the left hand. Jupiter facing him on the right, naked, his cloak on his shoulder, holding a long scepter in his left hand and tending to Diocletian a nicephor globe.
Marks

Photos from coin sold as modern fake by London Ancient Coins, link to the sale: https://www.acsearch.info/search.html?id=3221535, link to their website: https://www.vcoins.com/en/stores/london_ancient_coins-89/ancient-coins/Default.aspx?#!/Home.
Imitation of the RIC 306. Informations of weight and diameter, die axis: 6h, from London Ancient Coins.
Argenteus
TRIB POT COS II / PIETAS
DIOCLETI - ANVS AVG
Laureate bust of Diocletianus right.
TR – POT – COS - II / PIE - TAS
Pietas standing right, holding a globe with the left hand over an guarlanted altar and raising the right hand.
Photos from coin sold as modern fake by London Ancient Coins, link to the sale: https://www.acsearch.info/search.html?id=3221534, link to their website: https://www.vcoins.com/en/stores/london_ancient_coins-89/ancient-coins/Default.aspx?#!/Home.
No official coin corresponds to this imitation. The beginning of the reverse legend is illegible, TRIB? Informations of weight and diameter, die axis: 12h, from London Ancient Coins.