Hey Guys, im trying to date a 70s fender jazz bass that has an obscured neck date stamp. Its just too smudged to be readable. When did fender introduce the White blocks on maple necks? Ive seen early 70s fenders with both Black and White blocks and binding on a Maple Fingerboard. The pot codes date them at 1972, the finish is black on the body and the neck has the larger fender logo. It also has a tortoise pick guard.