Hi Just bought a 71 jazz bass and was wondering if all original ? The neck stamp is faded but the last digit is a 1 and a letter B after it. The pots I am having a hard time reading but ill show a pic . There in bad physical condition in order to read numbers. Ill show pics . I just don't know if these are what fender used in 1971. The pickups look original and have 4 digits on them saying 2041. Please let me know what you think about the pots?