D-mount lens mount commonly found on 8mm movie cameras have a thread diameter of 15.88 mm (0.625 inch) and Mount thread pitch of 32 TPI.

Aperture: f1.9 – f16
Focus: 0.3m – inf

Glass is clean and clear.

Focus/Aperture smooth with click-stops.

Excellent condition with no damage.

Lenses internal and external are clean and clear with only minor dust much better than expected for its age.

Complete in original branded dome case with dust cap.