For sale is a 200mm f/4 Nikon AI lens in very clean condition with one caveat. It has a small amount of fungus around the periphery of the inside of the front element. I would guess that it has no real effect on the images this lens makes, but it is there. Perhaps it can be fairly easily cleaned? The glass is scratch free and the barrel is in excellent condition.The meter coupling prong is missing. Focus is smooth and the aperture ring is precise. The extendable hood also works well. The lens comes with both front and rear caps. $25.00 including PayPal and shipping in the US. I am happy to ship it anywhere else for an additional $5.00.