A friend of mine who plays guitar has an old head that I've been using at practice. He used to be a bassist for a local legendary band, but has since settled down. Anywho, I know the thing is a legend but I have no way to really guage this other than to ask... It's an old SVT. No SVT Classic, No BS reissue, no V4B, no blah blah blah. This is the real deal (and I have the chiropractor bill to prove it. It weighs more than my 4x10... seriously). It's a silver face, but I have no idea of the year. It's in pretty good exterior shape, it works like a trooper. Sounds like a jet engine warming up when you switch it on. What is this worth? It's so different from what I have and yet sounds so sweet. I want to buy it (as a backup mainly), but I don't know what to offer... he thinks it's worth a ton.