Plautilla, AE18 of Aegina, Attica. 

FOYLBIA PLAYTILLA, draped bust right with small cornucopiae at shoulder.
AIGEINHTWN, Herm, bearded and with truncated arms, standing facing.

BMC 240 (this coin); Milbank Plaut-h in NNM 24; Prokesch 19 in AZ 1843.