Hasselblad Chimney Finder / Magnifying Hood for 500c, 500c/m, 503cx etc.
This is the nice chimney finder for Hasselblad 500 series cameras. It has a couple of advantages compared to the more common waist-level finder. It is completely enclosed to eliminate stray light. It has a built-in diopter adjustment so that most people can use it without glasses. Finally, the eyepiece is larger so it is easier to see the whole screen.
This one is in good condition with some cosmetic wear and a tiny bit of dust between the glass elements. There is a series of fine cleaning marks that can be seen with a strong flashlight, but they do not affect framing or focus.