I've seen picture of a Signal/One "receiver" in a book on receivers.
It was a prototype, maybe a mock up and never saw production.

Never even a consideration much less a prototype or mockup. Somebody else
playing games with Photoshop.

W4ZCB

If you could find one, it would be priced "way up there".

de ah6gi/4 currently restoring a CX7A. Not bad for a boat anchor.