Vintage 1930's Grover Acoustic Guitar Tuner Tuners Machines Martin Gibson Oahu For SaleCirca 1936. Extremely rare Grover tuner with fancy baseplate. Seen on some Martin guitars and also on fancy Oahu models and possibly some Gibson made budget brands. Tuner button is in bad shape but it can still be used. I didn't have the heart to replace it. Tuner works well, very slight bend in the shaft but not an issue.
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