Authentic Soviet metal construction set “Constructor-A”, manufactured in the USSR in 1975 (confirmed by original GOST marking on the box bottom). This is a true New Old Stock (NOS) example preserved in original factory-packed condition. What Makes This Set Special. ? Genuine USSR production, dated 1975. ? Original factory box with authentic age-related wear. ? Original illustrated instruction manual included. ? 100% complete set. ? Factory-sealed spare bolts included (original packaging). ? Original factory packing method preserved. Never assembled, never used. No replaced or mixed parts. Important detail for collectors. Identical metal parts are still grouped together using a single factory bolt and nut, exactly as packed at the factory. There are no screwdriver marks, no wear, no assembly traces on any components. ? Models Shown in the Original Manual. The instruction manual includes multiple classic Soviet technical builds, such as. Rail platform, mechanical constructions. New Old Stock / Factory Packed. All metal parts unused. Original zinc-plated hardware with uniform finish. Spare bolts preserved in factory plastic bag. Instruction manual intact and fully readable. Box shows light storage wear consistent with age (no restoration). This is not a refurbished or reassembled set – it is an untouched factory example. Soviet metal construction sets were designed as educational engineering toys, inspired by industrial mechanics rather than play aesthetics. Finding a dated 1970s USSR set in unused, complete condition with original packaging is increasingly uncommon and highly desirable among. Cold War memorabilia collectors. Industrial & mechanical design enthusiasts.