You and me both! Apparently there was a mirror coating applied on the inside of the lenses or something along those lines in addition to the outside... definitely not a pair of lenses meant for anything besides looking really cool.
This is correct. The lens used in the movie is vastly different than the one in the auction. The base lens is deeper bright red compared to the burgundy one on the auction. There is a back side mirror coating as you said. It was suppose to hide the eyes from the camera and give the front of the lens as semi mirrored look without actually being mirrored. There is also at least a front side AR coating to minimize reflections for the camera.