nos pass. side rallye sport mirror

i have a n.o.s passenger side mirror. i guess i can call it that. it has never been mounted on a car. while i was stripping down a 71 duster, i found this in the inside quarterpanel,. still wrapped in the original plastic.
how it got there, i have no clue............
but due to the position of it laying directly on the inside of the quarter, and the bracing behind the back door panel thingy, it has a wear mark in the paint. it is not into the aluminum itself.

located 30 minutes from martinsville international speedway in va

100.00 plus shipping