Pace Maker 3x4 Speed Graphic

The "3x4 Pace Maker" making attachment for Patent Rolex Holder(6x9).

Back view of my 3x4 Speed
Interexchangeable Lens: Home made Soft focus
The camera is possible to
be back as an original.

Test shot(Is it in focus?)
Ektar 127mm F4.7 coated, f5.6 1/100 Hnad leld.

It looks some scratches, as the Patent Rolex is very old one.