Optika Musashino Koki  Tele-Luminant 40cm f5.6 telephoto lens. Made in Japan. Serial # 41838. Circa 1958. High quality long telephoto lens by Musashino Koki for the Optika 6x9cm slr film cameras. Aluminum barrel lens. Unique and hard to find telephoto 400mm f/5.6 telephoto lens for the Optika IIA 6x9cm camera. Aperture range is f5.6 to f32. 77mm filter size. This scarce Tele-Luminant 40cm f/5.6 lens is in Ex++/Mint- or 9 of 10 cosmetic condition. No dings or dents. Super clean lens barrel finish with almost no marks. Clean optics, and lens coating. No separation. Unique square lens mount for the Optica IIA camera. Includes original metal front lens cap. This rare Optika Tele-Luminant 40cm f/5.6 telephoto lens in very clean condition sells with no reserve at a price of $395. I have more interesting and unique Medium Format lenses and accessories, Large Format cameras and Lenses, Vintage and Collectibles and Soft Focus Lenses. More great buys on my other auctions, Ebay Store and Web Page. Camera pictured is NOT included!