which is the question?

A Zenit 3M with Kristall name or a Kristall dressed like a 3M?
See Picture and link
Altogether an Industar 24M



http://www.ussrphoto.com/UserContent/772015_kristall variation.png

Thanks Luiz for digging this up! see this link for more information: http://www.ussrcameras.ru/?rp=1&action=tovar&tovar_category=383&id=216

Apparently this camera has a mount for both M39 and the Exakta bayonet! Interesting!

Cheers,
Vlad

FANTASTIC! AD THANKS

AND ALSO THE STIGMOMETER ON THE MATT SCREEN AND AN SPECIAL FLASH CONTACT AT THE TOP.
REGARDS
LP