This is actually an oddball if it is legit. The body, pickguard and neck (not biflex) are 1981-82 construction, but it sports the later 83-85 decal. It will probably be a 70s style B neck, and under the guard have the P-Bass Special top routing and grounding screw. The thumb rest is in the "wrong" place, but they were shipped uninstalled then. It is a tad high to me, but the late 70s ones are going that way, and this is pretty much the same animal.