Two bird pitchers decor main 17cm tall ?Vallauris?

I would appreciate any thoughts on these two bird-shaped pitchers. They are 17cm tall and each has DECOR MAIN stamped in the base. The one with the wood-chopper has a sticker with 'Ste Agnes' on it, just below the eye. Each is signed by a different painter, one Sonia, the other Diana. Is that a hint of a maker's mark on the base?
Thank-you.

it seems that some of the sellers attribute these items to the Vallauris workshops , some of them are holding back of telling a certain name.
anyway, as i understood, most of this kind of pitchers are depicting Lascaux Cave images.

https://www.ebay.fr/itm/373702132064
https://picclick.fr/Tr%C3%A8s-Original-pichet-Vallauris-D%C3%A9cor-Rupestre-394691119132.html
https://picclick.fr/PICHET-ANNEES-50-CERAMIQUE-DECOR-CERF-OEIL-ET-266192385534.html

what i personally think is that these pitchers maker(s) - which i think that are more workers of the same workshop -  they was influenced somehow (or tried to imitate ) by Picasso's work , who, we know, he carried out most of his activity as a ceramist in  Vallauris.

l.e. i read Diana and Sonia as signatures

My first thought on seeing these was Tourist souvenir work for the Lascaux caves.

"Ste Agnes" comes from Sainte Agnes, a village in the same region , 64 km distance to Vallauris.
i ' ve looked for Ste Agnes ceramics and, although there are few old workshops there, i couldn't find anything looking near these pitchers.

i would rather think that the sticker is from a seller, like a souvenir boutique and not from a producer.