Looking through my collection I found examples of early 70 Deaborn build Mustangs with the same pattern (single dot or dimple) only during that period. Not saying that they were not used later - just can't find any examples in my collection. Some of the following examples are from cars that are in their own unrestored picture threads here on the site while a couple are from members cars.
0F01F1086xx - Single dot or dimple
Looking through what I have I found allot of circle with spoke style and some small flags being used through the year
0F1230xx - Circle with spokes
0F1427xx - Circle with spokes
0F1427xx - Circle with spokes
0F1516xx - Circle with spokes
0F1631xx - Small flag
0F1907xx - Circle with spokes
0F1920xx - Small Flag