Nineteen preparatory drawings or jewelry projects (brooches, pairs of earrings, rings etc.), drawn in pencil or gouache on various black papers, canson papers or tracing papers, consisting of five main sets, including a batch of four stamped by Léon ESTOUBE, jeweler at 42 rue Sainte-Anne in Paris, registered in 1943 (wear, folds, tears and stains). Mid-twentieth century. Size: 7.5 x 9.1 to 16.5 x 22.5 cm