Antoninianus, unknown bust

[crowfeather]

The reverse is in pretty good condition, but the obverse is a little more worn, so I can't tell who exactly it is. I believe the ex. on the reverse says SMKB, but I could be mistaken.

[Steve Minnoch]

Not an antoninianus, put a post-reform radiate, apparently from a rare series RIC dates to 321-4, issued with radiate busts at Cyzicus for Constantine I (RIC 14), Licinius I (RIC 15), and Martinian (RIC 16).

IOVI CONS-ERVATORI, Jupiter stg left holding victory on globe and eagle sceptre, eagle to left, captive to right.

Steve

(P.S. the mark in the right field is apparently a mark of denomination, indicated 12.5 (denarii?).)

[crowfeather]

Interesting that it's not an antoninianus; it looked silver to me.

[crowfeather]

With a little more scrubbing, a larger picture.