help working out hallmark meanings

[arctic_cougar]

Hi,

I have a wedding ring my grandma left to me and was wondering what the hallmarks can tell me.

Any help would be greatly appreciated.

[JohnQ]

It appears your ring is marked "TD", which is likely the maker's mark, not a hallmark. Hallmarks designate metal purity and country/city of origin generally, trademarks are to identify the maker. I do not know who the maker is.