My new Speed Graphic came with a strange back - please see the photo. There are no springs of any kind, you can not move or open anything (except for removing the back from the body). There is a thin slot on the right side, which can accommodate quickload perhaps, but I don't have any experience with quickloads, so I may be wrong about that.
It looks, like I will be able to replace the back with a one from my old and well beaten Speed Graphic (that's why I decided to buy it).
I am just curious, what is the application of existing back and if it may be useful in some way. Graflex.org site does not mention about anything like that.