From the pictures it appears to be a 5 x 7 or possibly a whole Plate camera (6.5 x 8.5) with a reducing back fitted to it. The back may in fact be an original Kodak back
but not the one that originally came on the camera. Remove the back and measure the opening to see what size camera it actually is. You may be able to find a back to fit it, and be able to work in two different formats. Good luck.