can anyone identify this side mirror?

this one was on my '66 Mustang, but it was at the instrument cluster end. The Ford dealership guys figured the car must have been a renter when it was new.[/QUOTE]

I always wondered if our car had been a rental before pops purchased it .Or did He just figure with two boys in the house he better make sure we couldn't unhook the speedo cable and go joy riding without the odometer ratting us out.Years later when I inherited the car we had to cut that lock off with a cold chisel when I pulled the transmission.Nobody had a key for it.