Everything that NASA sent to land on the moon stayed there, except for the astronauts, a few kilograms of moon rocks, and the very rare piece of equipment, like this Crew Optical Alignment Sight.
The COAS was a periscope-like optical device that Apollo pilots used to sight their targets on spacecraft they were docking with (Lunar Module to Command Module).
Apollo 16 commander John Young secreted this COAS back from his Lunar Module, the Orion. He held on to it for 38 years. Jurvetson bought it at an auction; it was the first major acquisition of his collection.