Goerz 9.5" f/9 Red Dot Artar Apochromat 8X10" Large Format Lens in a Acme #4 Shutter

The Apochromatic Artar was designed by Walter Zschokke of Goerz in 1904, it became the most widely used process lens for decades. It is a true apochromat and very well corrected for other aberrations as well. Optimim performance is around f/22.