Thanks for posting this rare authentic gold finished ring. I’ve never seen it before.
As far as I know , we have the following rings of this type, so the type with rectangle front with cut corners:
Bronze ( without finish) , silver finished, gold finished and silver finished with black ( painted ?) background.
Perhaps there are more variations of this type.
It’s just a silver finished type (but there is almost no finish, only small areas remain). It’s just a trick of the light
at photos from post #2 real colour of this ring.