As you know, there is a posting regarding a prefix with the small F and large F varieties, which makes me think about something interesting...
Some $5 notes of the 1986 issue and some $10 notes from the 1971 issue have a small F compared to large F. Some examples of these include FDS, FNE, FPU, to name just a few.
If anybody has two or more notes with a prefix that is both small F and large F variety, could somebody please post a scan of the two notes for us to see?
Thanks, Jonathan