Unidentified lens

Anyone ever seen this lens? (adapted to Kiev-60 mount)








Any clue about what is it for?
I found nothing on the runet...
Surely technical, but for what? It's quite heavy (2.8kg), big. Acutualy no diaphragme, but I suspect there was a diaphragm before.

OB is known to be a code name for lenses (more commonly is OF).

I bought it, but it is at my friend's home atm.

see at:
http://olx.ua/obyavlenie/obektiv-ob-zh-IDhcXfS.html
LENS FOR AEROFOTOGRAMETRIC CAMERA!

ОБЪЕКТИВ ОТ АЭРОКОСМИЧЕСКОГО ФОТОАППАРАТА
фокус 200,9 мм. 1;5,4 в специальной оправе под аппарат Киев среднеформатный. Диафрагма отсутствует.
Длина в оправе 18 см. Объекив тяжелый.

ANOTHER ONE J-48 (zH48)MACRO
http://jarwhite.livejournal.com/34044.html
REGARDS
LP

SEE A j-25 AT http://static2.keep4u.ru/2011/10/04/b2b4ef8ce5aeffa890d1ae89f266a9d7.jpg

Thanks for you answer, but it doesn't help me a lot.
The first link to the sale is the one I bought
The seller told it's space photographie, but I rarely believe to this. He is old and very gentle, but I'm not sure he was competent about soviet lenses.
The second one is about J-48, it's another lens.
Same for J-25...there are a lot of J-XX lenses, it's cine lenses and projector lenses.

OB comes from OBjecktiv K is the formula type
All from the same Family
Really I do not knoe what means "J"- at least for the moment.
Regards