Re: NBD
Glenn, get the scratchplate up and take a look at the electronics. Look for evidence of Japanese manufacture. Forum members aged over forty will remember the Seventies as Ibanez' "lawsuit" period. Your bass guitar could be more valuable than you suppose.
Of course, it could also be made by one of the less fashionable copyists of the Seventies. Hondo, Kimbara and so on.
Take a hint from the photographs posted by F73. The stock pickup (original or copy) is no great shakes. Consider replacing it.
EDIT - A genuine Gibson Grabber sliding pickup will have the word "Gibson" embossed on the top of the cover.
EDIT #2 - Google for Grabber Bass copy. You'll get plenty of info on makes, models and specs. Beware, however, as you'll also get photographs of Gene Simmons.