Hi
Per D,
The first coin you published is definitely from
Kyzikos, belonging to its largest issue 5 with its smaller
diameter and distinctive 2 dots on the
reverse, i.e. after the main
legend, and in the
exergue. Also
reverse legend cut M-I or MI-LITVM.
Estimated large datation should be c. 288-290.
New style with small
diameter and large heads is estimated to be placed after Quinquennalia of Dio (celebrated 288), but
still while Dio. was mostly residing and campaigning in the East.
The lack of published
hoards in the East makes a more precise datation very difficult.
The second coin you publish with small
head, no cut in the
reverse legend and no dot in the
exergue belongs to earlier Issue 3, to be dated
286-7, not long after Maximian's nomination in March/April 286.
Helveticus