Albinar's M42 telephoto — the 200mm f/3.5 with auto aperture in screw mount.
The Albinar 200mm f/3.5 Auto is a fast telephoto prime in M42 screw mount from Albinar, a US-distributed brand associated with Spiratone and related OEM lens companies. The Auto designation indicates automatic aperture coupling for the M42 system.
The lens delivers 200mm at f/3.5 maximum aperture with M42 automatic aperture coupling, manual focus, and full-frame 35mm coverage. The f/3.5 maximum aperture at 200mm is faster than typical consumer telephoto primes of the era.
Albinar lenses were typically produced by Japanese OEM manufacturers and distributed under the Albinar/Spiratone brand in North America. The f/3.5 maximum aperture makes this faster than most budget 200mm alternatives. M42 adapters are widely available for modern cameras.
Test M42 automatic aperture coupling. Inspect elements for haze and oil on blades at f/3.5. Verify M42 thread engagement. Focus ring should operate smoothly.