10 BC. and later, Augustus, imitative As (halved Dupondius), irregular mint, cf. RPC 523.
Augustus, irregular mint, 10 BC. and later,
imitative Æ As (halved Dupondius) (11-22 mm / 2,17 g),
Obv.: [I]MP / [DIV]I F , head[s of Agrippa (left, with rostral crown)] and Augustus (right, bare), back to back; rectangular countermark on Augustus´head: IM (cf. Werz 107.4/1).
Rev.: [COL - NEM] , crocodile r., [chained to a palm; left above palm, wreath with long ties to r.], two palm branches below.
cf. RIC I, 52, 155-8 (C) ; cf. RPC I, 154, 523 . For countermark cf. Werz 107.4/1 .
The value of this series was in fact indicated by the presence of the number of heads on the obverse. One head on a halved coin meaning the value of an as.
The weight-peaks for regular dupondii of this issue are 14 - 11 g (RIC), 12,50 g (RPC I).