Schneider 360mm f6.8 Symmar-S private labeled for Calumet as the Caltar-S II, 70° angle of view, HUGE 491mm image circle, Sinar DB mount, best when used with the Copal Sinar Auto Aperture Shutter, edge fracture in front group, essentially out of the optical path, minor “Schneideritis” neither of which will affect performance, multiple dings in front and rear barrels, nonetheless this lens is a solid performer, no caps, sorry.