Unused focusing screen for OM cameras. Comes with the original box, instruction manual, plastic case, and all original accessories. This is a focusing screen 1-13 for Olympus OM-1, OM-2, etc. It's an easier-to-use type than the standard 1-1 microprism found in early models like the OM-1 and OM-2. Although it is unused, please refrain from purchasing if you are concerned about minor details due to the passage of time.