Hi Ben,
Thank you for another informative comment!
All the coins I’ve found, except the eBay one, are listed in Drost’s Le monnayage de Maxence, so it was quite easy:
Without crescent
1. P IMP C MAXIMIANVS P F AVG Drost 71a. Private coll.
2. S IMP C MAXIMIANVS P F AVG Drost 71a; Čentur hoard
3. T CONSTANTINVS NOB CAES RIC 160 Several known specimens
4. Q CONSTANTINVS NOB CAES RIC 160 Several known specimens
With crescent
5. P IMP C MAXIMIANVS P F AVG RIC 161 BM
6. P IMP C MAXIMIANVS P F AVG - eBay 2008
6. T CONSTANTINVS NOB CAES RIC 160 Oxford
7. Q CONSTANTINVS NOB CAES RIC 160 Vienna
8. Q CONSTANTINVS NOB CAES RIC 160 Vienna
9. Q CONSTANTINVS NOB CAES RIC 160 Private coll. 1
10. Q CONSTANTINVS NOB CAES RIC 160 Private coll. 2
Unconfirmed, without crescent
11 S IMP C MAXIMIANVS P F AVG RIC 161 BM (?)
12. S IMP C MAXIMIANVS P F AVG RIC 161 n 3 Oxford
(King p. 66, n. 4)
Unconfirmed, with crescent
13 P IMP C MAXIMIANVS P F AVG RIC 161 Vienna
(Jeločnik 1973)
My guess is that the mint continued with the long -/-//R-wreath-P-Q issue for a short while after the coup, including Maximian but dropping Galerius and Severus (several of the folles struck for Constantine and Maximinus could have been included, though). This would then have been followed by the crescent coins, for some unknown reason without Maxentius and Maximinus.
The IMP C MAXIMIANVS P F AVG legend could imply that the procurator monetae, just like his colleague in Carthage, assumed that Maximian was about to return as active Augustus, and perhaps he wanted to wait and see what role Maxentius would play. (We see this pattern in other revolutions as well: no one seems to know what’s going on or where things are heading.)
Following Mats Cullhed and others, I don’t think Maxentius had any hope of squeezing himself into the Tetrarchy as the mints under his control immediately ceased striking for both Galerius and Severus.
I wasn’t aware of that Constantine follis with a star on the reverse (did you find the picture in Stefania Santangelo’s chapter in Il tesoro di Misurata ? (I’ve been to cheap to get a copy of that book, but I probably should.) It would be tempting to include that type in an earlier series (RIC 120 – 124), but that would completely screw up the chronology.
Yeah, I was told about the Heritage auction. Sour grapes, perhaps, but I find these unassuming, corroded bronzes from eBay just as interesting as the fancy gold medallions.
/Per