This listing is for a vintage Prinz Galaxy 300mm f/5.6 telephoto lens. It features a long, classic 1970s/80s design with a built‑in tripod collar, manual focus ring, and clear distance and aperture markings. Cosmetically it presents very well for its age, with no obvious damage to the barrel or controls.

The lens uses a T‑mount (42mm × 0.75 thread). This is not an M42 mount. A T‑mount lens requires the appropriate adapter ring to be used on any camera system, including M42, Pentax K, Nikon F, Canon FD, etc. No adapter is included.

The lens has not been tested on a camera body, so it is sold strictly as seen. Optics appear clean on visual inspection, but internal condition and performance cannot be guaranteed.

A great piece for collectors, vintage camera enthusiasts, or anyone who enjoys restoring classic telephoto lenses.