YOU ARE BIDDING ON A VINTAGE ZEISS IKON CONTRAFLEX SYNCHRO COMPUR CARL ZEISS LENS 2,8 50MM FOR PARTS OR RAPAIR.IT IS IN GREAT PHYSICAL CONDITION THE ONE KNOB WITH BLACK AND RED TOP HAS COME OFF NOT SURE HOW TO FIX IT.THE LENS IS NOT CRACKED OR SCRATCHED. SOLD IN AS FOUND CONDITION. PLEASE LOOK AT ALL PHOTOS AND ASK ANY QUESTIONS YOU MAY HAVE. REMEMBER THAT I SELL MOSTLY ANTIQUE AND VINTAGE ITEMS AND THAT THEY ARE MOSTLY LIKELY NOT BE PERFECT DO TO THE NATURE OF THEIR AGE. IF YOU HAVE A PROBLEM PLEASE CONTACT ME BEFORE LEAVING FEEDBACK.