The Leitz SBKOO is a metal-bodied 21mm viewfinder designed to slip into any standard hot shoe. This one is in good condition overall, with no dents or dings in the metal housing, but: there's a small chip at one edge the front glass, outside the optical path, which doesn't affect the view, and there's a bit of dust inside, including a large speck in the centre of the front element which you can see if you focus your eyes right (or wrong, as the case may be).