A nice piece with fairly well preserved details.
Coin with erroneous CAESAR obverse legend not described in RIC, described in Mr. Stępniewski's catalog NOT IN RIC.
Obverse: bust of Caesar in armor and paludamentum, wearing laurel wreath, to the right, in the rim legend:
CONSTANTINVS IVN NOB CAESAR;
Reverse: Sol standing left with hand in gesture of greeting, holding globe, surrounded by legend:
CLARITAS REIPVBLICAE; in section ASIS;
Bronze, diameter 19 x 20 mm, weight 2.56 g, axis 2 h.