Gold Ring with F mark??

MentalUnrest said:

I think I found my first gold ring today but it has something after the 14k and I am unsure what it is. I found a 18k ring in summer, but it had letters after it which I found out meant it was plated and not solid gold.

This ring I found today sure looks gold and has the 14k on it but after the 14k there is a very small o shape, then a clear bigger F and then a 90 degree looking triangle symbol.

Any Ideas?

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