The 61-62 full size mirror is not the same as the F-85 mirror. The base is different. The mirror for the full size cars sits on the fender peak and thus has a “V” notch in the base. The F-85 mirror has a flat base. The round mirror heads are the same, it’s the base that is different. I bought a 62 full size mirror at Carlisle with the intention of extracting the head and pivot ball from the base and swapping it onto my old F-85 base.