Old style rear view mirror, unknown fit $10

I got this mirror from a old dealership that sold Plymouth DeSoto, Chevrolet, Internationa, though I dont know if it came from one of those lines. The mirror is perfect, the paint has been gon looked like it was painted silver. The mirror is 8 inches wide at longest part, and the long corved bracket with 3 holes is 9 1/2 inch long. Can be mailed in a 10 X 2 X 5 box cheaply.