I ordered the wrong WLF off *bay. I have a very clean and very nice WLF with fixed focusing screen for Exakta Varex. It has a prong that pokes down into the camera, and so I can't mount it on the later Exakta and Exa that I have, as the absence of a hole for that prong appears to be the main difference in viewfinder mount.
It comes in a pristine, supple leather case that appears to be original.
I would accept any WLF (not chimney, as I have one) that can mount in VX1000 (Same as Exa 1A)