Dating a squier bass updating drivetrain on a mountain bike
1954-1959: Same as above, only the format is M-YY, leaving out the day. March 1962 to 1965: Dark blue or red ink stamps below the truss rod adjustment at the neck butt. The “XX” does not refer to the day; it is a code for the neck type (e.g. The “W” stands for neck width: “A” is the narrower, “B” is normal width, and “C” wider and “D”, though rarely seen, is the widest.First half of 1959: No markings for a period after a customer complained about an obscenity written on the neck butt. 1966: the model number (the number stamped on the neck before the month) change (for example, “13”=Stratocaster).1972: A new eight-digit neck stamp was introduced colored either green or red. From 1972 to around March 1973, this new system was used simultaneously with the previous “XX MMM-YY W”.Again, either stamp can occur on instruments from this era.Finally, the first one or two digits of the code tells you which model you are holding; 22 being a Stratocaster.There are some exceptions as you can see in this information provided by Mike Gagliano.
The next one or two digits are for the month, here 10 = October.
Also, labeling techniques have changed with Fender owners, slightly adding to the confusion. S.-made Fender guitars and basses from 1950 until today, since they are some of the predominant vintage guitars for sale on Vintageand
Typically the serial number is penciled or stamped on the butt end of the heel of the neck of most guitars and basses.
1969: A new type of neck stamp of six, seven or eight digits was used on some models. Example: “529129B” (more info on reading there in the “nack stamps” section below.) This new green stamp was used simultaneously with the earlier “XX MMM-YY W” format.
Models from this period could have either code system.
Below is a list of date formats and how they were marked on the neck-butts: 1950-1954: Hand-written below the truss rod adjustment at the butt end of the neck.