Moust’s research has indicated that virtually all Fenders from 1966 to 1969 have pots dated from 1966.
#Carvin guitar serial numbers code#
When dating an instrument by the ‘pot code,’ keep two things in mind: The potentiometers must be original to the piece (new solder, or a date code that is off by ten or more years is a good giveaway to spot replacement pots) and the pot code only indicates when the potentiometer was built! If the pot is an original, it indicates a date before which the guitar could not have been built – so it’s always a good idea to have extra reference material around. Any final two digits with a code number over 52 possibly indicate a part number instead of a week of the year code. The final two digits in either of the codes indicate the week of the year the potentiometer was built. If the code is seven digits long, then the fourth and fifth digits indicate the year. The most common company codes are: 137 CTS 304 Stackpole 140 Clarostat 134 Centralab 106 Allen Bradley 381 Bourns Networks If the code is only six digits long, then the fourth digit is the year code (between 19). Sometimes these digits may be separated by a space, a hyphen, or a period. The first three digits indicate the company that built the potentiometer. It’s fairly easy to crack the source code. Moust’s research has indicatedthat there are no source date codes on any guitar pots before the late 1940s, and no single-digit year code after 1959 (six-digit source code). The EIA assigns each manufacturer a three-digit code (there are some with one, two or four digits).
The source dating code is an element of standardization that is administered by the Electronics Industries Association (EIA), formed in 1924. An Important Instrument Dating Breakthrough developed by Hans Moust (author, The Guild Guitar Book) Stamped on every potentiometer (volume and tone pots) is a six- or seven-digit source code that tells who made the pot, as well as the week and the year.
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