TEXTS IMPRINTED ON THE GUM

 

In some cases the posts imprint advertising, propagandistic or informative texts on the reverse of the stamps, on the gum. They are thematically utilizable, in the condition to present simultaneously the front side of the same stamp.

                  

 

   

Unofficial souvenir sheet of 1937, issued by the phalangites of General Franco
in Northern Africa, before their invasion in Spain (Spanish Civil War)