Local guy has a 70 or 72 super reverb for sale. Can't remember which, but it is a master volume, but no push pull. Has the alnicos. It has some issues though, which could be easy, or might be a pain. Right now it has one power tube which I can't believe even works. old style 6v6, not a GC or whatever it is that is supposed to be in there. After it's on for a few minutes, it starts to whistle or oscillate a high midrange sound. Also, the reverb is weak. I put a 12at7 in there of my own just to see if that helped. Made it slightly better, but not much. All the way up, it sounds like a normal Fender reverb on maybe 3. Now, I think some of this could be solved just with a right power tube, but I'm not going in there and fix it and drive up the price. He has about 800 in it, and knows he paid too much. Cap job is imminent. One pot has also been replaced with the wrong OEM type at least as a regular Fender knob won't fit. Good project if I can get it on the cheap, or run away? I've rehabbed a master volume Super before, so I am somewhat familiar with them. I am not able to properly diagnose problems other than just replacing one part for a like one however. What would be a price?