Ford Casting number as seen on the bottom side is D1OB-17713-AWA. Many people misinterpret it as D10B-17713-AWA, DI0B-17713-AW or Dl0B-17713-AWA. Perfect base with no cracks or bends. Visually it is impossible to tell this part from 1970 with a D0OB-17713-AW casting number on the bottom. 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!