Russian movie camera KS50B

Uncommon 35mm movie camera KS50B (it's design is similar to AKS-1). It is for 35mm film. Made in 1954. Included lenses are 35mm, 50mm, 75mm. Mag capacity is 30m. Speeds are 8, 12, 16, 24, 32 fps. Excellent condition. Great thing either for a museum or for an amateur DP :-)