Thanks Marshall, I thought it might be from 67 cuda, and I believe darts are the same, so 67 dart/cuda is a possibility.
Anyone else shed some info on what it is??
It's definitely from 67 or earlier. It looks a bit wide to me though. How wide is it? Maybe someone can compare the width in a 67 A body for you. I've had a few from bigger cars that are just too wide for an A body but otherwise look the same.
Ok, the widest point on the mirror is 10". The height on mirror is 2 1/8". The measurement on the drop from the mount to the arm is 5 1/4". I see a part # on the inside of the mount is #2765577
I think its from a B-body, a 66/67 coronet or plymouth belv'. The base has the squarer look to it, the screw holes might be a little further apart than on a A-body. Have to measure to know for sure.
Ok, it has 3 mounting holes the 2 holes closest to the windshield are 2 3/8" center to center. The base is fairly square and the dimensions on it are 3 1/8 by 1 5/8.
**I am looking to sell this, so if anyone is interested. $30 plus the ride, it is in near mint shape. Only minor minor pitting on the swivel ball.