7" Airline porthole

[Adam]

I've been wanting a porthole set for years, I always figured I'd find a Zenith first, but I picked up this Airline instead. It's a cool looking set, trapezoid shaped, wider on the bottom than the top. It's a 7" electrostatic set that uses 2 separate chassis, the bottom one has the power supply, tuner, IF, video, sound - the one on the side vertical, horizontal, HV. I'm not yet sure what that button on the front labeled "telephoto control" does. The cabinet really needs cleaning, what works good on these vinyl covered cabinets? pictures below...