Didn't know there was a fine jewelry discussion board until today. 375 = 9 k/450 = 10k/585 = 14k/750=18k. European. Maybe go to costume board jewelry dis board, put a pic on. Don't think this one is real gold.
417 is 10KT, GS could be maker's marks. There is an extremely slim possibility that GS is gold-shell, but I've never see it marked that way before, it's usually spelled out. I suspect it's more likely the maker's mark/initials.
"Yo ho, haul together, hoist the Colors high. Heave ho, thieves and beggars, never shall we die."
Cool, the reason I was asking is because I was confused. I've had lots of pieces marked 375 and 333 and 585. People think it has to say 14k or 10k, not necessarily looking for three digit numbers. Thankyou for taking the time...I'll view link when I get some time...