[FTP] Artist ID on Frog Ring

Hi all,

I have a ring that is 20-25 years old. It was bought in Hartford,
Connecticut, USA. Sterling silver, in the shape of a frog. The frog
straddles the finger belly down, with its hind legs wrapped around
the finger to form the band. The flip side (inside) of the frog is a
prince. You can see images of the frog and prince at

http://www.ganoksin.com/ftp/frog1.jpeg
http://www.ganoksin.com/ftp/frog2.jpeg

If you look closely at frog2, you might be able to discern the
maker’s mark, which is on the inside of the prince’s left thigh. It’s
possible that the artist’s first name is Jim.

Does anyone know who the artist is?

Thanks,
Christine, a refugee from the high tech world.