When you think of a memorabilia auction, you usually think of antiques or artworks and not telescopes. This particular offering is a Zeiss Tele-Tessar 500 mm f/8 lens that was used by Mission Commander David Scott in conjunction with a Hasselblad camera body.
This particular telescope lens has a lot of science history behind it -- it flew on the Apollo 15 mission, which was the fourth lunar landing and the first long-duration moon mission. The lens is obviously worn, but was once a high-tech and technologically forward lens that enabled astronauts to do things like take ultra-clear photographs of geological formations in the distance.
This memorabilia auction will surely appeal to space enthusiasts, particularly those with very big wallets -- at $1.6 million, this is an expensive but worthwhile investment for lovers of space exploration history.