Is there anything that isn't "vintage?" I'm getting dizzy looking at this. Output transformer has been modified to shift the electrons toward the back for better traction. The input capacitors have been supercharged. It has that '70s diy muscle car look.
http://www.ebay.com/itm/Vintage-Dynaco-Mark-IV-Mono-Amplifier-Needs-Tubes-2-/401034306330