Thanks!!
many nice pictures and information.
So it seems these figurines were made between 1956 and late 60s by the company Ex In Co. They made 43 figurines ( among them 30 of the most important ones in the Spirou magazine).
In the late 60s they had to stop making these because of new regulations regarding toys. The risk of injuries because of the metal inside was to big.
The material was also very bad because of oxidation. They bacame fragile and fell apart, unless you stored them in the bag and in a dark place.
Most of these were only made in one variation by this company, but Pewitt was made in 2 variations, both 10 cm( "A l'exception de Pirlouit,
que l'on peut trouver avec une houpette d'une forme plus carrée". Does it mean the hair is different??). Also Johan had a accessorie, a sword.
So this company only made these 3 smurfs.
Dupuis must later have had another company making the later dupuissmurfs??