When we did the variety section for the 2011 Charlton, we thought that there should be some more "semi-official DP#'s) and got the OK to assign new Charlton #'s to them (all the DP #'s). We talked to Bill Cross and he agreed. Since the DP#1 had been around for decades and is a very unique entity but kinda left/right(L/R) , we started with a DP#2 being essentially right/left (R/L). We took the most offset Low/High (L/H) and named it #3 ... then named the most offset(and hard to find) high/low(H/L) as #4. So that made the first 4 with the four quadrants of H/L, L/H, R/L, and L/R all accounted for. The #5 stands by itself as an oddity, as does the 9/6. The 2011 Charlton, again, was not meant to show ALL the varieties out there for each date .. only examples of what TYPES of varieties were available for each date (and we needed examples from EVERY date).
Since EVERY working die had the final digit (9) handpunched and it took 2-5 whacks of the hammer and punch to get it full, there should be as many R/P'd 9's as there are working reverse dies (200+?). Most are not worth time or effort to name or assign them, since most you need magnifications well over 5X to even see them. At 40X EVERY 1859 will show what some people call "repunching", but that's how they were made from the start. The mintmaster OK'd them for use so they evidently were within tolerance for an everyday manufactured object.