Schneider Kreuznach is the abbreviated name of the company Jos. Schneider Optische Werke GmbH, which is sometimes also simply referred to as Schneider. They are a manufacturer of industrial and photographic optics. The company was founded on 18 January 1913 by Joseph Schneider as Optische Anstalt Jos. Schneider & Co. at Bad Kreuznach in Germany. The company changed its name to Jos. Schneider & Co., Optische Werke, Kreuznach in 1922, and to the current Jos. Schneider Optische Werke GmbH in 1998. The Symmar-S is an incremental improvement to the original Symmar design, adding multicoating to the feature set. The lens is not symmetric like its predecessor and is not convertible. The available focal lengths are slightly different, with the subtraction of the 80 mm, and addition of a 120 mm and two 480 mm lenses of varying speeds.
This is a USED lens. The lens is clean and clear of scratches, haze, fungus, etc. Like all lenses this age there are some specks of dust but this will not affect images.