Originally Posted by LeicaTom
#589XXX is POST 1945 issue (about June 1946) the lens is a normal regular US Army PX issued era lens, with the bluish coating. (that online list for lenses is all wrong, original issued Summitars postwar start somewhere around the #582XXX series something in August 1945.)
This is very doubtful information. Summitars that were originally issued with the grey IIIc and stamped Luftwaffen Eigentum had mostly 57xxxx and 58xxxx numbers. Most of these camera's were issued in 1942 and 1943.