Description: Overstock from my lab. Viewthrough is clean. Remember this is M26 thread, bigger than RMS thread. Optics are nice.
Issues: some marks in body. The back of the lens has some bumps at the edge (they can be solved with proper optics tools). M26 thread has also some little bumps, but they are small and they fit perfectly in the M26 female turret socket (no problem in practice, see 4th pic).