Ford Casting number as seen on the bottom side is D0OB-17713-AW. Many people misinterpret it as D00B-17713-AW, D00B-17713-AW or DO0B-17713-AW. Perfect base with no cracks or bends. The Pastel Blue base is from a 1970 and the Red base from a 1971. Even when placed side by side it is hard to tell the difference.
Do you have questions about installing a passenger side mirror or using Riv-Nuts?
Have more questions about installing a passenger side mirror or using Riv-Nuts? Got a mirror lens that flops around in your Sport Mirror every time you hit a tiny bump in the road? WCCC to the rescue!