I think it's unpublished, with
rev. Hera/Juno, as Lars suggested.
A similar coin of the same governor, maybe even from the same
rev. die, but with Alex. and
Mamaea not Alex. and
Maesa on the
obv., can be seen on Kevin Beaulieu's website, hosted by Ancients.info.
For some reason coins of Alex. and
Maesa under Tereventinus are
rare.
Pick knew only two
types, three specimens, since 1064 shows
Mamaea not
Maesa. Hristova/Jekov pp. 189 and 191 try to add two new
types, but the readings of empress and/or governor seem doubtful.
I've been compiling a die study of
Marcianopolis under
Sev. Alex. for years, so have lots of material to consult!