Composition of the series:
Regular mail
10c. tawny red
20c. red
25c. green
30c. tawny
50c. violetto
75c. red
1,25 blue
1,75 + 75c. orange
2,75 + 1,25 L. green gray
5 + 3 L. gray
Air mail
25c. green
50c. tawny
1 L. violetto
2 + 1 blue L.
3 + 2 L. orange
5 + 3 red L.
For a total of 16 stamps