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BF Deluxe Reverb with ink stamped number inside chassis. What is it?

Discussion in 'Amp Central Station' started by gmm52, Sep 9, 2017.

  1. gmm52

    gmm52 Tele-Meister

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    I recently saw a picture (can't seem to locate it now) of the inside of a 66 Deluxe Reverb. It was something like T1836XX in black ink near the rectifier tube socket. What is this number for or what does it mean? It didn't seem to correspond to the serial number stamped on the back.
     
  2. dannyh

    dannyh Tele-Afflicted

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    I think the last 2 digits are the year, and the 2 before those the week of that year...did it look like this? This is from a '66 Super Reverb (not sure exactly what this stamp was for, date chassis was assembled maybe?).

    Photo Jan 08, 5 33 17 PM.jpg
     
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  3. gmm52

    gmm52 Tele-Meister

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    Yes, it looked like that. Thanks for the reply.
     
  4. Dacious

    Dacious Poster Extraordinaire

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    I think the last number is the year - the two before are the week. Here's my newly acquired SFVC - would be 26th week 1967.

    Otherwise, it's 52nd week 1967 and that suggests a nice Christmas present....
    I think later EIA went to 7 digits with two digit year code so you could distinguish the decade.

    IMG_20170910_144602.jpg
     
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  5. Silverface

    Silverface Poster Extraordinaire Platinum Supporter

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    There are various codes like that on Fender chassis.

    They don't have an historically significant meaning as far as dating an amp - the most accurate production dates for BF/SF amps are obtained with the serial numbers. The last numbers are usually the year - but the chassis was produced, not the amp. In some cases they were around the factory for several years before being used.
     
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  6. Dacious

    Dacious Poster Extraordinaire

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    [/QUOTE]


    Yep I think it's just the date of this component. My amps got a 66-dated output and 67 power transformer.
     
  7. slider313

    slider313 Tele-Afflicted Silver Supporter

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    Actually that's the stamped code denoting when the chassis was completed and is one way to determine the amps date. In the first photo above: the "T16" shows Technician 16 completed the chassis on the 44th week of 1966. In the second photo above: "T40" shows Technician 40 completed the chassis on the 52nd week of 1967. Serial numbers can be confusing because the blank chassis were not picked or completed in numerical order. Completed chassis were not left around the factory for several years before being used.
     
    Last edited: Sep 10, 2017
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  8. Wally

    Wally Telefied Ad Free Member

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    Fwiw, the gathering and correlation of all of the codes in these amps is the work that created the serial numbers charts, which did not exist until the very late 1990's due to the work of Greg Gagaliano, Greg Huntington(RIP) and Devin Reibe. Before that work, the serial numbers were meaningless.

    There are six articles concerning the results of that work. "Greg Gagliano bibliography" will get you tomall of that invaluable information. Here is the first article....

    http://www.ggjaguar.com/fendamp1.htm
     
  9. Tele wacker

    Tele wacker Tele-Holic

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    "Before that work, the serial numbers were meaningless."

    I disagree Wally. These serial numbers were inside these amps from the factory and always had a meaning. They weren't meaningless at all.
     
  10. slider313

    slider313 Tele-Afflicted Silver Supporter

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    Serial numbers give you a general range. The component EIA codes, chassis date stamp and tube chart stamp help nail down the actual month and year.

    An example would be: a palate of Vibrolux Reverb chassis are delivered in October, 1964. Number A 00100 (Fender started with A 00100) is at the bottom of the pile. Obviously, the tech's pick chassis from the top of the pile. serial # A 00100 is finally pulled in January, 1965. All higher serial numbers were built before it.
     
  11. Wally

    Wally Telefied Ad Free Member

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    when I wrote 'serial number', I was meaning the serial number that is stamped into the chassis on the right hand side as you look at the back of the amp. Those stamped numbers...into the metal not with ink...were never used in sequential order nor were they logged out as the left production. So, those serial numbers never meant anything for dating an amp UNTIL those 3 gentlemen gathered all of that info on thousands and thousands of vintage Fenders are correlated all of it to build those serial number charts that everyone uses over these last 17 or so years to date Fender amp.
    AS I Noted, serial numbers were NEVER a part of dating these amps until after those articles were written. Those of us who dealt in vintage amps before that information was gathered merely did what is still what has to be done IF one wants to know not just the date but the originality of the amp.....we have to go through all of the codes on the components, the tube chart, the cab....wherever we find a number that has a date code in it.....such as the code that brought this thread in to being. IN other words, the die-stamped serial number in the chassis is simply another date code---now that the chart has been built---to verify originality. IF all of those codes do not match, the amp has originality issues.
     
  12. FenderT40

    FenderT40 NEW MEMBER!

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    I was T40. Worked for Fender right when CBS took over until 1969. We stamped every amp chassis after we tested them for being in spec. using scopes, variable power supplies, and multimeter and most importantly the wooden ice cream stick to test solder joints. A shocking experience....LOL.
     
  13. Wally

    Wally Telefied Ad Free Member

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    This is exactly what I always took the various chassis ink-stamped codes to be...a worker I.D. and a date code for the production work.
    Thanks for undeniable testimony.
     
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  14. JDRNoPro

    JDRNoPro Friend of Leo's

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    And welcome, Fender T40!!!!

    Thanks for joining and posting :)
     
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  15. BobbyZ

    BobbyZ Doctor of Teleocity

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    Wait a minute, we have a new member that was actually there?
    I got a question @FenderT40
    Did you all used to hide the tube chart guy's eyeglasses? :)

    Welcome to TDPRI !
     
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  16. SoK66

    SoK66 Tele-Afflicted

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    T is the technician number, the next two are the week of the year, the last two the year of production
     
  17. Wally

    Wally Telefied Ad Free Member

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    In the stamp in Dacious post #4, I take the year to be the last two digits...67 = 1967 while the third and fourth digits are the week of the year...52nd. If we accept our new member, T40, tone an honest and forthright former Fender employee, T40 is an inspector’s personal numbers...not just T but T plus the first two digits.
     
  18. SoK66

    SoK66 Tele-Afflicted

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    Correct, that's what I meant.
     
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  19. Wally

    Wally Telefied Ad Free Member

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    I figured as much, SoK66, but there are those who could read it otherwise. You know how it is....you see a misprint or a skipped thought that when taken literally is not reality and three months later it is internet gospel, right?
     
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