This group of shakers is fairly common, but the color range is limited. Prairie green and the blue glazes dominate. White is rare and desert gold is conspicuously absent. The group is firmly dated by the frequent appearance of the rosetone glaze (desert rose).
In the 1942 catalog the pink glaze is dusty rose. In the 1943 catalog that is replaced with rosetone. Also, the prairie green set pictured here has a hand written note inside it: "Mrs. Evelyn Potter Burton, South Carolina, April 15, 1943." While such notes are not conclusive proof of dating I believe they are useful supporting evidence. Note also that several other shaker types that are commonly called "1942 only" use this same small "S" hole set.
The small "S" is a somewhat stylized pattern without the full curvature of the standard letter. The "P" has a square top. Both are small in relation to other pour hole set Frankoma used.
This group does not include any of the difficult-to-date turquoise green sets on red clay. Those are restricted to the crude "S" group.