Radio Vision model 414

I've recently added a Radio Vision model 414 to my collection. The only thing need now is a schematic. I haven't been able to find one on the web or in my printed repair manuals. Might there be some place I haven't found that might have it? This was a one-off, no other Radio Vision models that I've found reference to.

Have you tried Nostalgia Air? They carrt free to download schematics on web.
If it isn't there, it may not be findable.
Bill Cahill

This place may have onehttp://www.radiomuseum.org/r/radiovisio_414.html What i read real rare set.