A lovely old Jazz with mojo a plenty
Pedant hat on/ The 67 seen on the pot codes is not part of the date, in fact the only date that can be seen on the centre pot looks like 6644, 1966 week 44, the 137 indicating CTS manufactured.[list]
[*]Most Fenders from 1966 to 1969 have 1966 dated CTS pots. Apparently CBS/Fender bought a large stock of pots in 1966 that lasted till 1969.
[*][b]How the Source-Date Code Works.[/b]
In either case, the code works the same. The first 3 digits on a pot, or the first 2, 3 or 4 digits on a speaker are the [b]source or manufacturer code[/b].
The [b]remaining 3 or 4 digits are the date code[/b]. In 3 digit dates code, the 1st digit is the last digit of the year. On 4 digits date codes, the 1st and 2nd digits are the last two digits of the year. In either case, the remaining 2 digits are the week of manufacture (01 to 52). With this in mind, remember if the last two digits of the source-date code are greater than 52, you're [b]not[/b] looking at the source-date code!
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Cheerz, John