Carl Zeiss Camera Lens, Biotar 1.5/75 - Unusual Mounting Bracket For Sale

I\'ll apologize up front: I know very little about camera lenses, and so can tell you very little about the technical specifications of this lens. If you have a question about it, do not hesitate to message!
What I do know is this: the lens is in an unusual mounting bracket because it was in an unusual piece of equipment. It came out of an old cold war facility in the arctic that tracked sputnik, from a piece of equipment that - near as I can tell - was used to manually enlarge images using this lens and some impressive 1000 watt bulbs. After the facility was abandoned the lens sat for some time, and accumulated dirt and grime (as you can see in the pictures). I have not attempted to clean it. All I did was save this poor guy from going into the back of a garbage truck!The aluminum ring on the front manually adjusts the aperture inside. Other than this, who knows! Shipping is non-negotiable - USPS flat rate is the cheapest way to ship this thing out of Alaska with enough packing material to keep it safe, while getting it to you fast.Again, don\'t hesitate to message with questions. Cheers.