There is a Zenith porhole set on e-bay.The starting bid is $100.00
It looks like the cabinet is in fair condition, but I have seen worse. The crt is intact, and the set has the power supply under the main chassis ,on the cabinet floor.

Just thought I would passit along.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2186911281&category=3638

Looks just like mine, right down to the missing off/on/volume knob!
Marlin

The seller says is has a 17.5" screen, but I suspect its the 19" monster porthole, I really like watching that super large tube. I had found a similar model with the cabinet in poor condition and used it as a parts chassis to restore my blonde porthole combo.