Hello - I just acquired this Cocarette and I was scouring google and here for a manual and information on it. All I know is that they seem to have been made in the mid 20's and have different shutters/lens combinations. I am trying to figure out how is this camera focused to infinity? Is it when the front standard reaches the end of the chrome tracks? I see no notches to mark infinity position :-(. If you notice on the picture there is a nifty thumb device(white circle on picture 3) that assists in focusing the camera, but only when infinity has been reached. Also, this camera's back is not removable, and I am trying to clean the interior somehow as it very dusty, and some of it has attached to the rear element. The 120 film is loaded through removing the top panel like a drawer so I am puzzled on how to ge inside. The format of this camera is 6x9, the shutter is Derval with speeds from 25- 100 and B and T options. The lens is a Meyer Gorlitz Doppel Anastigmat F6.3. Thank you for your help as always.