The Tam Tam stool was designed by Henry Massonnet in 1968, manufactured by the company he created, Stamp, stamped Stamp Nurieux Ref 169 MADE IN France and then distributed by Philippe Barbier. When Henry Massonnet designs Tam-tam, composed of 3 parts, two cones merging into one another, and a slightly convex plateau, the plastic allows to explore new typologies of seats and seduces the biggest names of design, which echo with the utopias of the moment. The audience follows, the success is at the rendezvous: the Tam Tam stool sells more than 12 million copies. The photo of Brigitte Bardot sitting on a Tam Tam makes it enter the ranks of cult objects.