John D said:Thin yellow layer on the back wall - yes.
Pink - Not original AFAIK.
Thin yellow layer on back wall - yes, good to know. Thick layer of pink on sides and bottom that looks about as old. Since you qualified your statement, AFAIK, might be prudent to let it be and get a second (or third) opinion. Thanks for your input.
I may be selling a few other tube amps to make room (waaay more power than I'll ever need).