Unknown Underwater Housing

Hi,
Can anyone identify this underwater housing as to how old it is and what Russian camera it was intended for.

yas my friend....(no name ?)
I possess the same , originally made for Zenit 3M , but if you possess special gear set it is also for Leningrad.

Many thanks for the info. I do have the gear set.

lesthe fed
Your KPF underwater housing was made by KMZ
and is fully described on
http://www.photohistory.ru/1207248185391278.html
Thy tell usage on Start or Zenit 3M (obviouly Kristall also)
Due to its construction I belive difficult to operate a Leningrad on it.
Regards
LP