Seymour Duncan 84-50 Tube Amp and the Quadratone Footswitch:
Jester Oahu JU-28 Tube Amp:
Note: I tried my best to do this accurately but I give no guarantees for accuracy. The cap value in blue is a best guess on my part because I could not see the markings on the cap itself. I saw a schematic of a similar amp with that same value.
Teisco Tube Amp Model 62: