Private Printing Houses, for example Institut de Gravure, on the other hand, did not have such restrictive policies for securing the dies that they produced. This was especially so during the years 1930 and 1940, when several philatelic issues for France and its Former Colonies were produced by Institut de Gravure.
Differente è invece il discorso relativo ai punzoni prodotti da Stamperie private, come ad esempio l'Institut de Gravure, che, soprattutto negli anni '30 e '40, ha realizzato numerose emissioni filateliche per la Francia e sue Colonie.