Date Code: Wide panel, narrow panel, brown, blonde, and black face amps have a date code hand-stamped on the tube chart. This code is made up of two letters. The first letter translates to the year and the second to the month. The reissue amps also made use of this code. Example: FG=July 1956, QA=January 1967, and a reissue CG=July 1992
| EIA Source-Date Codes: Electronic components such as transformers, potentiometers, speakers, and some capacitors are often stampted with a date code indicating who manufactured them and when. The code follows the format: XXXYY ZZ where: XXX = a two or three (possibly four on newer amps) digit number indicating the manufacturer. (see chart below) YY = is a one or two digit code indicating the year. If it’s a one digit year you need to determine the correct decade of the amp some other way. ZZ = a number from 1 – 52 indicating the week of the year. Remember, your amp is newer than the newest component. So if you find pots from late 68 and transformers from early 69 you can be pretty sure your amp is a 1969. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
|