I'm not a big expert with lenses, but here's a very mysterious rangefinder-body Jupiter-11 with the Zenit/SLR backfocus. This was posted in one of the facebook groups and I wanted to get your opinion on it. Normally I would immediate discard it as "kotleta" if it wasn't for the earliest known serial #5101912 of known lenses with Jupiter-11 name on it, right after ZK-135. The next known number is Aidas's lens #5101933 which was considered the earliest before this one.
The person who sold the lens to the current owner is claiming it's made of Zeiss glass because of bluish tint (which is very possible considering the blocks of German glass were reparrated from Germany post war) and that KMZ was experimenting with J-11 to make it for the Zenits in this form.
Has anyone seen such factory modifications before? And it's inches on the ruler, not cm
it's about 85mm overall size.
http://www.ussrphoto.com/UserContent/2572018_clipboard_image_721040e9.jpg
http://www.ussrphoto.com/UserContent/2572018_clipboard_image_34fdc9b6.jpg
http://www.ussrphoto.com/UserContent/2572018_clipboard_image_3d1cc1c2.jpg
http://www.ussrphoto.com/UserContent/2572018_clipboard_image_481168e9.jpg
http://www.ussrphoto.com/UserContent/2572018_clipboard_image_7d76fd03.jpg
Best regards,
Vlad