Vtg signed Uncas Karatclad ring

Lovely vintage ring! Signed 'Karatclad by Uncas Heavy Gold Electroplate'. The diameter is around 20 mm. The ring is non-magnetic, though I'm not sure what the base metal is. There are only a few spots left of the gold plate. But it has such unique beauty and character as a silvertone ring with a couple spots of yellow gold! Some wear, especially on the inside, and that dark discoloration right near the big gold spot. But overall good condition, with a lot of shine!