anyone know this lens?

Hi there!
this is my first post here , and I have a question about this lens.
Unfortunately there is no any sign on it. There are only 2 glass elements one on the front () and behind one )( about 180mm diameter. I think there are 2 elements missing, anyone can tell me what is it? thanks

http://allegro.pl/duza-rzecz-i1531388298.html

Regards
Michał

Looks like the front cell of a great whopping big telephoto lens...

one more thing, I think this is an episcope lens, there is no diaphraghm

Ole, doesn't the classic tele have a cemented doublet in front?

OP, it is the front cell of something. Could be a tessar type, could be a dialyte type. Both have a pair of singlets, () )( as you said.

Probably isn't an episcope lens, those are typically mounted in sleeves with a focusing arrangement.

If you're asking for advice, don't buy it unless you need a doorstop. As is it won't form an image.