Diocletian AE Follis. 305-306 AD.

D N DIOCLETIANO BAEATISSIMO SEN AVG, laureate bust right, wearing trabea, holding branch and mappa
PROVIDENTIA DEORVM QVIES AVGG, Providentia standing right, extending right hand to Quies, standing left, holding branch and leaning on sceptre, S-F across fields, PTR in ex. 

Not in RIC (obv legend); N. Sinai hoard 76-86.
RIC VI Trier 676a var. Rare

With permission of Roma Numismatics, June 2009