Potentiometer code dating
They generally follow the following format: (example) 322 5904 where 322 is the manufacturer code (in this case Tungsol), 59 is the year (1959), and 04 is the week.One alternate scheme is: 274 940 274 is the EIA code (RCA) 9 is the last digit of the year (in this case 1949).In years past, EIA (Electronic Industries Association) also went by the name of RETMA, and the original acronym of RMA (Radio Manufacturer's Association).Dating Telecaster Pot Potentiometer, Please Help Hi! Toppscore Well, if anyone knows how to date a Telecaster pot, PLMK. I also did not know you could date a guitar by them. Fender is/was very consistant as how the week/year dates were labeled/stamped on most vendor supplied items used within Fender guitars & amplifiers.The codes were created by the Electronic Industries Association (EIA) in 1920s to identify the product source and date of manufacture.
The pickups and pots/potentiometers should have close dates to the neck-butt dates ~ then the guitar has a strong possibility to be original & complete (body & neck. I do that to all of my work on other peoples guitars and a letter stating all the mods I did. I was thinking of putting Lip Stick pick ups on my Strat. You can always get 1x10,2x10,3x10,4x10 cabinets and the same with 12" & 15" cabinet combinations. Also, I own several vintage combo amps & amp heads.So a pot stamped 1377833 is a CTS pot made in the 33rd week of 1978.Note that this does not mean a Muff with a 1978 pot was actually made in 1978, it just means it was not made much earlier than 1978.- All vintage USA Big Muffs have source-date codes stamped on the underside of the potentiometer cans, or “pots”.
The pots are what the knobs are mounted to, essentally manually adjustable resisitors that control the voltage across a circuit.
Then, the neck-butt date code stamp gives the Strat/Tele a true year & week of production. There are alot of people like me that up grade or just fix stuff.