I think they may have underestimated a lot of the stuff on there. Then again, he did have quite a collection, so it's not like any one bass was especially his trademark, llike McCartney's Hofner was.

Still, it annoys me that the highest estimate item is a 1958 Gibson Explorer guitar, and not a bass at all. Not that a '58 Explorer (the original issue year, BTW) isn't worth as much as they estimate, especially given its provenance.