That's in a sad state, but yes that's a 1964 Burns Bison. I have one and the serial number is also in the 5000"s. The tuners aren't original, they should be the black Van Ghent ones and it's missing the headstock badge, bridge cover and mute assembly. The polyester finish did crack and come off a lot on these so I guess it made sense at the time to strip it back.
It would certainly be a project and spares are very rare. The electronics on these are complicated, I can let you know what each setting is supposed to do.
Does it work? I'd be interested to see some more detailed photos.