I just rec'd an 8 X 10 Gundlach Viewcamera from an auction with a 12" Ross Homocentric lens installed. The lens is missing the rear element as well has one damaged iris leaf. I am looking for another lens for parts. Also looking for an 8X10 back for the camera. Mine has a 5X7 back installed. Also interested in lenses and film holders for 8 X10.