Albinar's preset telephoto — the 200mm f/3.5 Special with manual stop-down.
The Albinar 200mm f/3.5 Special Telephoto Preset Screw is the preset-aperture version of the Albinar 200mm — less convenient than the Auto version (ID 4485). The preset mechanism requires manual stop-down before each shot. The f/3.5 is the same faster-than-typical specification. The screw mount adapts to any camera via M42.
Same optical quality as the Auto version — the preset versus auto distinction is mechanical, not optical. The f/3.5 provides more speed than typical alternatives. The preset aperture is inconvenient — the auto version is preferred for practical use. Albinar quality varies by OEM. Basic vintage telephoto.
Screw mount — likely M42. Manual focus with preset aperture. The M42 universality is the practical advantage. The Auto version (ID 4485) is preferred for convenience. Build quality is basic. Same optics, less convenient aperture mechanism.
Very cheap. The Auto version (ID 4485) is preferred — same optics with more convenient aperture. The preset mechanism adds unnecessary inconvenience. Not recommended when the Auto version exists. Only if the Auto version is unavailable.