Tokyo Kogaku Topcor 5cm F3.5 Leica L39 screw mount. Released in 1955. It was sold as a standard lens for the Leotax K. The unique two-stage aperture design was considered eccentric at the time. Made of an aluminum alloy, it is very lightweight. The F3.5 specification was not particularly high-performance even then, and it was positioned as a popular lens. Despite its unique design, it was not a popular lens, but its strong character is attracting attention from enthusiasts today. I have prepared some sample photos using this lens. This lens shows a shower ghost where rainbow-colored light pours down like a shower from the light source. This is a common feature seen in old Japanese lenses. However, it only appears when the light source is captured at a specific angle, so it's not difficult to avoid if you don't intend to use it. Basically, it's robust, resistant to distortion, and sharp. It's also one of the smallest and lightest lenses that doesn't collapse, making it ideal for street photography. Its unique appearance also makes it perfect for walking around the city. The optics are clean with no mold or haze. There is a scratch on the front aperture ring, but it doesn't affect the operation. The filter ring is located further inside, and the impact of the outer ring is only cosmetic, but I think this is the only point to deduct. It will be listed at a reasonable price, but there are no problems with the shooting aspect, so it is a good value for practical use. Condition: A bargain with some issues Appearance: Scratch on the front aperture ring Optics: Clean with no mold or haze Operation: Tested and confirmed with α7 Accessories: Front and rear caps Stored in a dehumidified cabinet 0783 #Tokyo Kogaku #Topcon #Topcor #topcor #Leotax #Old lens *All lenses on sale have been tested with actual photos! *The evaluation is subjective. Please understand that these are used items. *Returns are accepted, so please feel at ease! (For items not discounted, you will be responsible for the return shipping costs, please consult before evaluation) Other features... Old lens