From the ebay listing:
This model was Gibson's first made bolt-on neck bass made.
WOW! HOLY LOW FREQUENCY BATMAN!!!!!! A real, honest to goodness BOLT-ON neck!!!!!! I gotta get this. Then I want to buy a Fender SOLID STATE amp, a DIGITAL reverb unit, and a Yugo with an Alembic bumper sticker to haul it around!. Oh yea, and one of those new fangled propeller aereoplanes in case I get a gig out-of-state! hehehehe
Bill, tgo