Phrygillos is one who is at several different mints, and he has several ways that he signs a coin,
his name,
his initial, and/or the bird that is a canting pun on
his name, and sometimes more than one. Charles
Seltman talks about him, including a
didrachm at Terina, a nomos from
Thourioi. and I seem to remember something from
Syracuse.
I got this weird picture in my
head of what an itinerant magistrate would be like.
I know what you are talking about with Tarentum. I don't know if they are artist's signatures, artist signatures tend to be integrated into the design, or discreetly next to it, the signatures on Tarentum are not that way, on the other hand, there are no integrated/discreet signatures for Tarentum and I don't know what else they would be. So artist signature is plausible, but whether it is correct, I don't have enough information.
I have a slightly different question, but instead of starting a new
thread I thought I would add it to this one.
Can you think of any examples where there is an artist with a signature on a coin, whose name is also found elsewhere?? (Assuming the signature is of an artist). Or for that matter, a magistrate on a coin named elsewhere? Either literary or inscriptions (besides coins)? For that matter, I wonder if there is any mention of signatures that survive in the literary tradition?? (but don't necessarily survive in examples).
One artist I can think of is possibly Kimon, who amongst others did a Syracusan
dekadrachm, and the name is mentioned with some embossing in Athenaeus of Naucratis (although the time of this
work is not mentioned, and Athenaeus is, like, 3rd or 4th c. AD.)
I have a magistrate in mind, (Artemon of
Abdera) but I will hold off explaining for now, to see if others can come up with some, or of course people can talk about signatures on coins in general, and I don't expect others to necessarily be as crazy as I am about obscure sources of Greek literature.