I have a Cambo Sliding Back with a Mamiya mount. This will fit a Cambo camera (not Ultima). The back is in excellent condition.
Since my camera is a Sinar, I would like to sell this one, or trade it for one which will fit a Sinar camera.
Alternatively, Cambo has confirmed that the Cambo mount can also be changed to a Sinar mount. If someone has this mounting plate, I would like to buy it.
I am also open to offers of other sliding backs or Graflok backs in the Mamiya mount.