I realized that there are not two, but THREE Archie Fan Club buttons produced over the years.
FYI, here's the date range for the Archie buttons:
1. 1950s-1971 - Says "Member Archie Club" with Archie in a bow-tie.
2. 1972-1973 - Says "Member Archie Club" with Archie's head only in updated drawing.
3. 1974-1990s - Says "Official Member Archie Club" with Archie's head only and "Archie Club" in balloon lettering.
#3 is easy to find. #1 is a little bit harder, but it's #2 that's the difficult one as it was only available for two years!!
I finally purchased #2, so now my collection is complete!!