This PEM scope was one of the few PEM scopes made in 1939 at the Kharkov Machine-Building Plant (FED), while most of them were made at the Progress plant. The front part of a lateral mount is still present.

DSC_9592 - Copie

Another rare PEM scope also made in 1943, during the siege of Leningrad. Note the simplified Smirnskiy mount, expedient canvas lens covers and brass tube, roughly made of loose parts due to the lack of materials and machinery during the siege.

DSC_9589 - Copie