I went to look at an old Marshall Stack yesterday. The price isn't collector, but it isn't chump change either. The Serial number was scraped off, one cabinet didn't have a back cover, and the other didn't have the plate stapled on. Looks kind of like it was hot a while back. It was a 100watter, the serial number was s/b..... scraped. The "super lead" on the back Was "Super" then "lead" on a gold sticker. All I did was take off the back cover, and saw it had an upright power transformer,missing one side of the bell?-leads coming out a hole in the other, which I thought they didn't use (uprigt) until '70?, Siemens el-34's MMMMM! All blue Erie cap cans. The chassis seems all original(no extra holes), except the ohm selector is a longish flatish? chicken-head looking thing. Never seen one on a marshall, but looked to be old and dirty enough to be original. I mean this thing was dirty!!! Cabinets were well worn, but I've had newer that looked much worse. Literally toured around the world, with pics to prove it. Owner has had it since the late 70's I'll post pics when I get my camera, later today. Sounded like God him/herself had a help in putting this monster together. Not as loud as I thought it would be, to get it sounding good, my old Super reverb had to be near earsplitting levels to get inspiration!!!