Rear protective cap
for 39mm lens back, plastic (bakelite)
"LZOS" plant, USSR

Perfect condition. Cap has very small, almost invisible signs of age and use.

Lenses "Industar-26m", "Industar-50" and "Jupiter-8" are not included and shown as an example of mount.

This rear lens cap was supplied with "Jupiter-9" lens with M39 mount. Of course, you can use it for any lens with M39X1 mount with any flange focal distance: M39X1/28.8; M39X1/45.2, M39X1/27.7.

Material: plastic (bakelite)
Size (diameter*thickness): 44 mm*12 mm
To fit lens back - 39 mm
Weight - 9 g