Dating vintage fender pickups updating and snapping of trees
For Stratocasters it is 22 and for Precision Basses it is 5.
The other three digits (320) are a mystery and perhaps are some kind of batch or lot number. Here’s our P-Bass again (s/n 277983) with the code 529129B.
I won’t get into the pros and cons of 1970s Fenders here, but instead, I hope to shed some new light on those weirdo neck codes.Andre Duchossoir briefly discussed his findings for the 1972-80 codes in his excellent Telecaster and Stratocaster books. I used this information as the starting point for my research.I examined and/or received information regarding stamped codes for about 150 Fenders made between 19. In most cases, the stamp was smudged beyond legibility or the stamps were incomplete. Some guitars simply had the model name, such as "MUSTANG" stamped on the butt end of the neck in green or red ink.The new code consisted of 6, 7 or 8 digits and was usually stamped in green ink.
An example of this type of neck code found on a Precision Bass is 529129B.Second, my data set for making conclusions is relatively small and therefore, subject to change as new information surfaces.