Fender amp dating code
I wish I could say that I figured all this out on my own.While doing research on Fender amps in general, and the Champ in particular, I came across the most amazing series of articles by Greg Gagliano on the subject. If you have any interest in vintage Fender tube amps, without question you’ve got to read them all.
In that case, you will have to make a guess as to the decade in which the speaker was produced (1947, 1957, 1967, etc.).
If your speaker is in its original amplifier, you can make an educated guess using information from your amp.