Hi....I am new to this board from New York state. I purchased what I was told was a Mark IIc+ (wood/wicker combo) around ten years ago. In preparation to sell the amp I am trying to verify all info that I can. The amp has a foot switch and has "8.84" written on the underside of the chassis between the tubes. There is a "+" sign above where the power cord enters the rear panel. This model has the graphic EQ and reverb unit. What else can I do to verify the model, year, etc.? The prior owner also had a beautifully matched extension cabinet built to turn this into a mini stack.....I have pictures