It would also greatly depend on the condition of the bass, and more importantly, if it is original or has it been modified.
Well...... it's been modified...... a jazz bass pickup has been added...... and all the frets have been pulled out....... but a nice job was done to it.....and itsounds beautiful...... soo approx...... is 1000 agood price to pay?? -T
If you're looking for an expressive instrument, your description of the sound gives you the easy answer. If you're looking for a good investment, forget it, (IMO, George Gruhn's, and that of experts like him). Once irreversible mods are made and original parts are gone, the vintage value goes down the dumper. But many "real" bassists will always give you a grand for a "beautiful" sounding instrument.