Punkfolkrocker, it has been years since I heard the term "valves" used to refer to what we call "tubes." Thanks for the memories, I guess.

I'm taking a number from the speaker to guess that this Champ is from 1979. I can't find a serial number or a number stamped on the tube chart, but there is a number stamped on the speaker - so I used this Speaker Code Chart. 4657934 is the number, and I gather that "79" is the year of manufacture. The one I have looks exactly like this one, which has a high bid of $202 the day before the auction ends. This one looks the same, and had a "buy it now" price of $505.

-Joe-