Although doubt they are British hallmarks as the lion passant (walking lion) is the symbol for sterling silver (925) on English Silver and you say the ring is GOLD. Scottish silver before 1975, like gold, bears a thistle mark. Over the years of collecting, I have found, there are quite a few US jewelry marks that look similar to UK hallmarks, because British Hallmarks were a sign of quality, so US jewelers would try to imitate, UK marks, if you know what I mean.
