B&M series 60. Early to mid-70's. Basically an improved version of the '64-65 Mopar floor shifter. Imperial Services was re-popping these a few years back.
NHRA banned any after market shifter that didn't have a positive reverse lock out which doomed the market on these
I had several of them but had to switch all the race cars over to legal ones
They area really good shifter
way better than the later ones with the cheaper cables
I like and use the Winters, Fairbanks, Turbo Action floor shifters now