I guess it depends on when it was made. I bought a 3001 case in 1979 that was the same width as a 4001 case.Isaac wrote: Perhaps so, but my 3001 case is narrower than any of my 4001, 4003 or 4004 cases.
Sometime in the mid '70s, the base cases were widened. The early ones are the same dimensions as a P-Bass (not Jazz) case.
I guess this was to accommodate more padding.
