Beautiful Ernst Leitz Wetzlar Summar 5cm f2 lens (sn: 207770), see photos for details. Focusing works smooth, aperture ring and blades move smoothly as well. The front glass has micro-micro scratches (my guess is several bad cleaning jobs from previous owners) but no fungus, it seems to have no effect on the photos, as tested and used with my Leica. Plastic back lens cover and metal front lens cover included.