Need for a DP-1 Finder:
A. The lever on the right side (looking from the back) that releases the finder from the camera body.
B. Eyepiece for DP-1
For a black F2 body:
A. The collar (preferably in black) that surrounds the shutter release button. There may be a separate flat piece sort of like a washer that seals up the area around the shutter release button--unless it's part of the collar base.