Hello,
This coin looks like a typical mediocre condition AE3 follis 18mm ~3g. It came from the UK as an uncleaned. Description is:
OBV: CONSTANTINVS IVN NOB C; laureate, cuirassed, bust holding victory on globe in right hand and mappa(?)/scepter resting in left hand which he is holding in front of his chest.
REV: BEATA TRAN *** QVILLITAS; altar with globe above, inscribed with VOT/IS/XX
EXE:(S)TR• Trier mint (just the upper parts of T and R are visible, but the dot is clear on the rev. between 5 and 6 o'clock)
REF: RIC VII Trier 353var R5 323AD.
At a first glance, the variation consists of the altar legend break VOT/IS instead of VO/TIS, but at a second look, there's also something about this bust - doesn't it look more like I2 rather than I1 (noted in RIC)?
Lech Stępniewski notes about this issue: “BUST TYPES I1 and I2. Both busts (probably identical, see footnote 1 on p. 90) are described as "laur., dr. [...]", but in some cases this description should be changed to "laur., wearing trabea [...]", "laur., dr., cuir. [...]" or even to "laur., cuir. [...]". See examples of TRIER 312, officina S, TRIER 353, officina P, TRIER 353, officina S and TRIER 383, officina S. Note that it is sometimes hard to distinguish elaborate cuirass from embroidered and decorated toga picta.
Note also that some of these busts could belong to a military type and than, according to Claude Brenot, object in l. hand is neither a mappa nor a sceptre, but a small dagger called pugio (see Bikić-Do Hoard, p. 17-19). See example of TICINUM 121.†(cf.
http://www.forumancientcoins.com/notinric/cv7.html pp. 89-90)
At the same time, Victor Clark, in his adjunct bust type gallery (
http://www.constantinethegreatcoins.com/bust2/), shows what I have been also noticing about these bust types: that they are different.
I would like to see some opinions about this issue.
Thank you.