Vintage CARL ZEISS JENA Nr. 2592960 APO TESSAR LENS 1:9 f=45cm commercial grade camera lense F16-45 scale with Douthitt Diaphragm control corporation series 4-E-2 exposure gauge which is marked Detroit, Michigan - USA. R745 stamped on side. Gauge at top measure 8 1/4" wide x  overall lense with gauge measures 7 3/4" tall. Father stored this for many years and we have stored it for at least 28 years ourselves. Considering how old it is it appears to be in very good condition. It needs to find a new home.  Sold as is. Thanks for looking.