Thank you ALL for the input, links, ideas and support. It's nice to know that a crazy guy like me is in good company .

Jim - whattcha got .... needs to cover 26" diameter image circle with no movements, cosmetic condition doesn't matter (as you already know ), don;t need a shutter and another one with a Waterhouse slot would be nice as it makes a great shutter slot ... and remember eh? ... I'm a poor, financially destitute, struggling amateur wanna-be photographer who's also a cheapskate (well, the "amateur wanna-be" part is accurate )