I think you have never heard of this mythological beast: Ichtyokentaur!
Plautilla, AD 202-211, wife of
CaracallaAE 20, 3.17g, 19.94mm, 225°
obv. FOV PLAV - TILLA
CEBA / CTH.
Bust, draped, r.
rev. NEIKOMHDEW - N /
DIC NEWKO / RWN
Female ichthyokentaur, diademed, nude, with forefeet of
horse and fishtail, ring l. on waves, holding auloi in l.
arm and
dolphin (?)
in extended r. hand
Rec.Gen. 253
var. (has only
CEBA)
extremely
rare,
good F, nearly black
patina (not green!)
For more information please look at the
thread 'Coins of mythological interest'
Best regards