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1971-72 saw several changes to the model 4001, the most prominent of which was a shorter headstock. The crushed pearl inlays would be retained until very early 1973, then replaced by pearloid inlays. 1972 also was the last year of bass models fitted with a “tug-bar,” which is the clear lucite finger rest mounted on the pickguard next to the neck pickup. This example has the "flat" Grover tuners. OHSC.
