Flat naïve longchamp décor

I completely cracked on this earthenware during a tour of china... Then I wanted to know more about are authors. To begin with I called the longchamp workshops... I spoke to the new director who had never heard of this alain. The manager then referred me to a group of former use of earthenware, which is the memory of this brand. Here is the answer a response from a descendant of the charbonnier family founder of the earthenware factory: "in no way could this dish with this drawing be produced by the earthenware of longchamp.the shapes and decorations of the earthenware were created for their most part by the chefs or artistic directors, who never signed their creations. The earthenware factory has used external signatures only very rarely, which are known (louis vallet, maurice moisand, etc.). This dish is therefore a personal work made, from a dish bought at the earthenware factory or at a dealer, by an adult adept of naïve art or a child, who signed his first name, probably because his "work" was not intended to go out of his sphere private." the mystery still hangs around this alain who signed this dish in 1962... In any case what is certain that it is a unique and unusual piece.