Gold ring hallmark - mean?
by Richard O'Connor
(London, England (UK))
I have a gold ring with 5 hallmarks: (1)rect box with 3 letters - R&N, H&N, or the & could be a letter A , (2) Crown (in box) (3) number 375 (in box), (4) a single symbol(in box)- not decipherable and,(5) another single symbol(in box)- not decipherable
How can I find out what the hallmark means other than 9 carat gold indicated by 375 ?
Could you confirm if this is an antique hallmark
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