As you know, there were two versions of the day/night rear view mirror used between 65-66. The first version had a rocker lever, while the second version, typically used in 66, had a turn screw adjustment.
My 65, which has a buck date of June 29, 1965 and a scheduled date of July 8, 1965, has the 66 version with the turn screw. The car has all the other components of the visibility group (two speed wipers and remote mirror), so I have no reason to think the day/night mirror is not original, but I've received questions of why I have the "66 version" in a 65 car. I suspect that because my car was built so late in the 65 model year, it is likely Ford had already began using the new style, but I also recognize the mirror could have been changed over the years.
Does anyone have any examples of a late 65 with the "66 version" day/night mirror?