I think that as it is shown in your photos, the lensboard and ground glass are on the wrong ends of the camera body. The side pivot of the standard now used for the lensboard is more appropriate for the ground glass film back. I think you will find that the outside dimensions of the overall lensboard and the whole 11x14 back are identical and will interchange.

I second the opinion that this is more of a special purpose camera rather than a standard studio camera, possibly intended for copy and reproduction work.