Olympus Zuiko 300mm f/4.5 Telephoto lens. Serial # 144272. Made in Japan. Fits Olympus 35mm manual focus SLR cameras such as: Olympus OM-1n, Olympus OM-2, Olympus OM-4, Olympus OM-4T and Olympus OM-3. This lens can mount on Olympus E3, E5 and Olympus E-620 D-SLR E-mount "four thirds" and Olympus OM-D, EP-3, Panasonic GH3, GX1, G5 "micro four thirds" cameras with proper adapter. This lens can also be used on most other brand mirrorless digital cameras with the proper adapter. Lens uses 72mm filters. Aperture range is f/4.5 - f/32. Minimum focus distance is 12' or 3.5m. Lens is Ex+/Ex++ or 8.5/9 of 10 cosmetic condition. No dings or dents. Clean barrel with few small marks, and good lettering. Clean glass with very few small dust spots inside that can be seen with a flashlight ONLY. Nice multicoating. Smooth and clean aperture blades. Mounts to camera with no problems. A sharp Telephoto lens with good sharpness for your Olympus OM manual focus system or many digital cameras with proper adapter with interesting bokeh and color saturation. Lens comes with Olympus front and rear caps, and BONUS original Olympus Teleconveter 1.4X-A. Sells with NO RESERVE at a price of $275. I have more Olympus OM lenses, Large Format cameras, Lenses and Accessories, Medium format cameras, Subminiature and Soft Focus Lenses. More great buys on my other auctions, Ebay Store and web page.