In this Black Sabbath performance, Geezer Butler can be seen playing a 4-String Lakland Jazz Bass. At approximately 7:31 of the video, you can see a faint Lakland logo on the head of the bass. Specifically, this bass model is most probably a 44-60 Lakland, as the Geezer Butler signature Lakland is a P bass and there are only two 4-string J basses of this style in the Lakland website: the 44-60 and the DJ-4, but the DJ-4 has block inlays on the fretboard, and what Geezer uses in the video is a fret inlay which can be found on the 44-60 series. (It's a miracle Geezer used a Jazz instead of a Precision)more
I have owned over 70 basses over the years. This is my number one. It is a US Model Shoreline Gold with matched headstock binding and dots. I have it strung with Labella Low-tension flexible flats, and the sound is incredible. The US Laklands are expensive, but you really can;t do any better.