Hi
Marius, you are right about the top row. They are:
SG 317/324, Minkus R122/129, Blanco 108/115, Yvert 100/107,
Michel 90/97.
The stamps that you are missing for a full set are:
SG 320/Minkus R125 50c yellow
SG 321/Minkus R126 1b claret
The one in the middle is from a revenue set 9. Your stamp, the first in the set, is:
Minkus R148 / Blanco 134 / Yvert 126 / Michel 116/124
All of the stamps pictured are of minimum value.
Jerry B