Fujinon Macro EBC 55mm f3.5 extender tube
This is an M42 55mm macro. With the extender tube you can get a 1:1 ratio. I bought the lens off a bloke who had clearly taken really good car of it but quickly discovered I can't stand the faff of macro photography. The glass is in perfect condition, no scratches or haze. The focus pull is incredibly smooth and precise. The lens cap is scuffed and scratched and there is a tiny bit of paint loss on the aperture ring but otherwise, it's in great condition. I have included a few test photos which