This is a well used, but not abused, 45 degree prism diagonal. It came with a Televue Ranger. Anodizing is brassed on the top barrel from exposure to the sun (it lived in my picture window.)
Heavy chrome bottom barrel has minor set screw marks. It is internally threaded.
All internal surfaces are factory blackened.
Missing the set screw. (I used it with 2" Televue eps that have the 1.25" inner barrel and large outer skirt, so took off the original set screw and have misplaced it.)
High quality prism optics in near-mint condition.
This is a very good quality prism diagonal for cheap, if you don't mind the cosmetic wear and the trip to the hardware store for a new machine screw.