Educate
Not really more collectible, but I think they're kindaneat.*The*ones with no letters are just the first block printed--the first 100,000,000 notes.
The 1899 $1, in particular, had a *lot* more notes printed than any previous series, so the BEP had to get a bit creative with the serialling to avoid running out of blocks. Over the course of 24 years or so, they printed:
One "plain" block, with symbols at both ends of the serial.
Fourteen single-letter blocks, with a letter prefix and symbol suffix. These were A, B, D, E, H, K, M, N, R, T, V,*X, Y, Z.
Fifteen double-letter blocks, with matching prefix and suffix letters: AA, BB, DD, EE, HH, KK, MM, NN, RR, TT, UU, VV, XX, YY, ZZ.
Eleven A-suffix blocks, with changing prefix letters while suffix letter Aremained constant: BA, DA, EA, HA, KA, MA, NA, RA, TA, VA, XA.
One of each serial style might make a neat set. If you want, you could even throw in astar note; they all have prefix * and suffix B.
The 1899 $2 was printed in smaller quantities, so it only used the "plain" block and then single letters up to R, with nodouble letters needed.
