This is an oddball assortment of brass gearbox synchronizers for a Triumph TR6 automobile. One is definitely used, 1 looks like it’s been used lightly and the other 5 look to be unused - I can detect almost no wear on the teeth or the other surfaces. They have been on a shelf for years and so I don’t know the exact status but that’s the best description I can give. Thanks for looking - bid now !