a nice example of Diocletian's abdication issue.
Diocletian
A.D. 305- 307
27x28mm 9.6gm
D N DIOCLETIANO BAEATISSIMO SEN AVG; Laureate and mantled bust r., holding olive-branch and mappa.
PROVIDENTIA DEORVM QVIES AVGG; Providentia standing r., extending hand to Quies standing l., holding branch and leaning on scepter; S/F across fields.
In ex. PTR
RIC VI Trier 673a