Rodin , The Kiss

Found this Rodin statue at an thrift store a few years ago. The base is two inch. and the statue itself measures 10 inches tall and approx.6 inches around the bottom. According to an article i read , " A large number of bronze cast were done of the Kiss ., The Musee Rodin reports that the Barbedienne Foundry alone produced 319. " According to the French law in 1978, only the first twelve can be called original editions." The material of this piece i am not sure, perhaps terracotta, marble, or possibly a cast plaster mold ? This piece was made before the Musee Rodin Report ... it has a lot of marks and writing on it, and just above the Barbedienne Foundry mark there is an inscription that i can hardly make out. On the back there are two more marks , one reads ( C 1977 AMR and the other is some kind of seal. Please help me ID this lovely piece. Thank you all.