I have learned it has a CTS speaker in it.
Quote:
FENDER AMP SPEAKER CODES
This chart will identify the speaker brand used in your amp.
Fender used speakers manufactured by the following companies:
Altec-Lansing -#391
CTS - #137
Electro-Voice -#649
Eminence -#67
Jensen - #220
Oxford - #465
Rola -#285
Utah -#328
Jensen supplied all Fender speakers until approximately 1961.
Since 1962 Fender used speakers from all the above companies
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In the pic the "026888" is the Fender part number. The "137" is the speaker brand code. The "7423" is a date code showing '74 week 23.
The second image is EIA codes taken, one from the OT, the other I can't remember but they are also indicating '74 with weeks 31 and 32 as milocj stated above.
Quote:
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EIA numbers taken from the transformers may help you to determine the date of production on amps that fall between the different dating schemes. These numbers always begin with "606", and are followed by three or four digits in various combinations. If three digits are present, the first digit would refer to the year i.e. ("7" would mean 1967). If four digits are present, the first two digits refer to the year i.e. ("66" would mean 1966). The last two digits would refer to the week of the year i.e. ("26" would mean the 26th week or approximately June). An example would be: EIA 606-4-21 would mean the 21st week of 1964.
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I am now certain with your help and info from
Superior Music that it is indeed a '74 version of the amp. I think endzone is probably correct in stating about the misprint on the logo info.