The
rhyton symbol is not terribly uncommon on the poorly named 'Campano-Tarentine' didrachms, occurring on a number of examples, facing either left or right, and at least one
type featuring a
goat protome rather than the usual
horse.
However I only know of the one example of it appearing on a 'Horseman', the example shown above. This is not to suggest there isn't another
type, but I'm not aware of it.
Evans sometimes confusing text seems to refer to a
litra featuring a
rhyton, but I have not been able to track that one down.
Taras was renowned for its ceramics, which traded throughout the Mediterranean and are often featured on their coins.
While visiting the Seattle Art Museum with a friend a few years back we were treated to a lovely example of a Tarentine
griffin rhyton on display in the Greco-Roman section.
If I can find the image online I will attach it here.
~
Peter Edit;
Found it!