For sale, my old GK MB150S. Bought new from the Bass Doc in Newcastle some time in the mid to late nineties. Lightly gigged around the place for a few years, then neglected for many more. A few years ago I took it to a local repairer for an overhaul - there was a noisy pot. (Their name escapes me now. We talked about Jah Wobble...) Today, it's in great condition. I just tried wiggling all the pots and there's no noise at all. Still sounds clean louder than I dare in my terraced house. As you can see from the pics, the cosmetic condition is pretty good. A few scrapes here and there, but not as bad as some of the examples I've seen.
Note - I don't have an IEC cable to go with this. I'm not sure how I managed that, but I don't. I can demo it at home, but the sale is for the amp alone.
I'd prefer collection, or a meet-up somewhere a reasonable distance from Manchester.