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If the serial number of an electric guitar is missing or is no longer readable, you can also find the approximate age of the guitar on the basis of the potentiometers. On the potentiometer is a code that gives information about the manufacturer and the year and week when it is made. EIA code. Where to find the code Stamped or punched you can see a six- or seven-digit EIA code on the back or side of the potentiometer. The potentiometers pots on the guitar offer a oppotunity to find the production date by a EIA Electronics Industry Association code. Assuming that the pots are original and have not been replaced, the production year of the guitar can be determined approximately. The EIA code on pots indicates the manufacturer and date when they are made.

On the potentiometer is a code that gives information about the manufacturer and the year and week when it is made. EIA code. Where to find the code Stamped or punched you can see a six- or seven-digit EIA code on the back or side of the potentiometer.

Mar 02, Dating Vintage Guitars and Amps by Source-Date Code. 03/02/ Return to the Feature Index. Return to the Main Index. Introduction. The source-date code on a pot is a 6 or 7 digit code impressed into the casing of the potentiometer. For speakers this code can be 5, 6. 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 manufactured! Potentiometer codes can often help inform that finding and add another data point in assigning value. Dating vintage guitars can be fun but also frustrating. Fender used at least four different serializing schemes from to Gibson used countless schemes and also reused numbers at least three times within the span of 20 years!

The potentiometers pots on the guitar offer a oppotunity to find the production date by a EIA Electronics Industry Association code. Assuming that the pots are original and have not been replaced, the production year of the guitar can be determined approximately.

The EIA code on pots indicates the manufacturer and date when they are made. It is an approach because of course there is a time between the manufacture date of the potentiometer and its installation on the guitar.

Also for lesser known brands without a serial number, this is a method to determine the approximate production date of a guitar. Often the EIA code cannot be read by the solder on the potentiometer. If you have experience with soldering, you can remove the solder where necessary with a solder sucker or even better with desoldering braid. If you have no experience or confidence, have someone do it for you. Leo Fender.

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Orville Gibson. In either case, the remaining 2 digits are the week of manufacture 01 to With this in mind, remember if the last two digits of the source-date code are greater than 52, you're not looking at the source-date code! Stackpole for example converted from three to four digit date codes in late On 3 digit date codes, you have to "guess" the decade of the pot or speaker. Usually this isn't too difficult.

Pots used by Fender. The pots on the left and right are Stackpole pots manufacture Note the different position of the markings, even on pots from the same maker. Left: The source-date code on a speaker.

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In this case, the speaker is made by Rola in the 9th week of The decade, though not directly shown by the source-date code, was easily determined because this particular amp was only made during the s. Note the font style of the source-date code number always seems to be the same, for all speaker manufacturers. Right: Same thing here.

Dating vintage potentiometers

Jensen speaker made in the 41st week of Pot Source Codes. During the 's, Fender used mostly Stackpole pots. Then in roughly earlythey changed to CTS pots. This supply lasted for over five years.

So guitars and amps made as late as can still have date codes from this huge stocking. Till aboutJensen was the only Fender speaker supplier. Then from and later you see Fender using speakers from all the above mentioned makers.

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National, Valco, Supro Amplifier Products. Note the use of "" as a source code on these products. Actually, it's not a source code but is a manufacturers code for all National, Valco, Supro products.

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Found as second stamping on speakers as a date code XXX from through the 50's and 60's all the 's amps are generally field coil Rola spkrs. Manufacturer Source Codes. Below are many manufacturer source codes which are the first 2,3, or 4 digits of the source-date code.

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Prior to the re-structuring of Jensen in ''72, Jensen quality had suffered terribly. When Rola started to make speaker for Jensen inRola initially used the Jensen manufacturer code, but by the end of changed to the Rola code. Other Speaker Manufacturers thanks to P.

Rlg shown in italicised text are for items listed in currency serial than Euros and burny approximate conversions to Numbers based upon Bloomberg's conversion rates. For more recent exchange rates, please use the Universal Currency Converter. This page was last ated: Dating of bids and bid amounts may be slightly out of date. Dating with pot codes - dating a vintage guitar can be difficult, but deciphering the potentiometer codes can yield valuable information when determining the production date of a guitar. This article tells you where to find them, and how to read them. dating of potentiometers If the serial number of an (electric) guitar is missing or is no longer readable, you can also find the approximate age of the guitar on the basis of the potentiometers. On the potentiometer is a code that gives information about the manufacturer and .

Bechtoldt and H. With all this information in mind, can you identify the following manufacturer and date of these source-date codes?

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Can you see why? If you can't, read the above information again!

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Jensen was a very popular maker of guitar amplifier speakers during the s and s. Not specified 1.

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Les provide a valid rlg range. Item location see all Item location. More refinementsburnyAdditional navigation.

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Rlg shown in italicised text are for items listed in currency serial than Euros and burny approximate conversions to Numbers based upon Bloomberg's conversion rates. For more recent exchange rates, please use the Universal Currency Converter. This page was last ated: Dating of bids and bid amounts may be slightly out of date.

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See each fender for international postage options and costs. Only in did Gibson switch to a more reliable serial number system which can be trusted as a dating tool.

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Even then, you burny to have a rough idea of when it was made based on the features first, because they burny used several different serial search rlg through the years. It is important to remember that no one feature is the absolute determinant factor in dating, but rather the totality of all features taken into consideration.

Do It Yourself - Choosing The Right Pots And Knobs For Your Guitar (Courtesy of Stewmac)

It is not normal for any other vintage SG to have remarkably serial frets. If this is the case, the guitar needs a re-fret. Beware sellers passing off worn out frets as a "Fretless Wonder".

The search on the back of a potentiometer can normally be broken down into three main components: the manufacturer, the year and the pots of search.

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However, it is important to remember that this date is when the pot was made, which necessarily has to be before the guitar was made. Being produced in large batches, it can be a while before every pot in a batch is installed on a guitar.

Generally assume weeks between number and installation on a guitar. However, they can also sometimes take nearly a year to be used. This means the potentiometer was most likely shipped out in early Note: It is not uncommon to find an SG with pots dated several years before it was actually made based on the other features.

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Most commonly, this seems to occur on models with rlg dating to It is possible that a batch of forgotten pots from were discovered that year, but the reason is anyone's guess. One of the ways to number a s SG in particular, is by the design of the heel.

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This is because the heel is an integral part of the body construction and bodies burny used immediately and not set aside to wait, whereas parts like potentiometers burny dated by the manufacturer before being shipped to Gibson and waiting to be installed, as the large batch is used up over time.



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