Hi, i found this huge gold color ring (doesn't even fit my thumb in size) in a river. It seems to have a hallmark on it, which i believe to be 'EH' or 'EW' in a rectangle and 'IH' or '18' in a oval. Any information on what these hallmarks could mean or what the ring is made of or any info at all would be appreciated, thanks. Would the '18' in the oval signify the gold content in the ring? Does normally the carat amount be put in a oval in a hallmark?
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