According to the Michel Catalogue, the shades for these are X, Y, Z, etc. So then why does the Expert sign them A, B, C, etc? Am I to assume that x y z stands for a b c?
To use the Michel catalog, one needs to remember that capital letters from the beginning of the alphabet (A, B, C ...) stand for perforation or cutting varietes, capital letters from the end of the alphabet (W, X, Y, Z) for watermark varieties. Color shades are designated by lowercase letters from the beginning of the alphabet (I have seen a ... i), paper varieties by lowercase letters from the end of the alphabet (v ...z). It appears that these stamps are marked for their colors.
Michelnr 9 (6 pfg on white paper) and there are 4 different colors (a,b,c and d)
Michel nr 8 is the 6 Pfg Black on 3 different paper colors (x, y and z)
And then we have Michel nr 10 6 Pfg Grau-violet on 2 different paper colors (x and y)
And it puzzels me because it look like your stamps are on coloured paper.......
So I believe you have a Michel number 8 and a Michelnr 10, but can not say for sure.
