I have an archtop tenor banjo with what appears to be the original TB-3 neck. There is no serial number on the rim or resonator. The rim is 3-ply maple and, if original, it has been refinished. I have no clue as to the maker of the tone ring. It is nickel plated and in very good to excellent condition, but it has no identifying marks of any kind. I have not been able to match its cross-section with any of the better known arch top rings. It weighs 3lbs 6.6 oz per the USPS scale. Hopefully the sketch may help one of you knowledgeable folks to identify it for me.
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