Focal length-135mm
Relative aperture - 1:3.5
Diaphragms -from 3.5 to 22
Focusing- 1.2m to infinite

Made by KoMZ - Kazan.
for Zenit Screw Mount M42
Lens has preset aperture by pressing ring toward camera.
All numbers are silk screened.
"Made in Russia" printed on a white sticker .
Complete set included metal screw-in sun shade, front and rear cowers, and plastic box. No printed manuals were found inside brand new set.