This is the reverse light bracket that attaches to the side of a standard transmission. I believe it works for most of the 60's and early 70's at least GM standard transmissions. It is NOS, has been sitting in dry storage since purchase 20 years ago from a small town dealership nearby.
The bracket has never been installed and is in nice condition. The box is too.
I would like $20.00 plus actual postage for the bracket. I do not have any of the other pieces.