This model is currently being reproduced by the Max Le Verrier house with marble bases. These are absolutely original from the 1930s. They are presumably made of bronze, or at least metal, and have been cast in a single piece. A casting art that Max Le Verrier kept secret.
Weight of the two bookends: 4.8 KG. Base length: 16.5 cm. Carefully shipped in a single or double ultra-protected cardboard box. Shipping costs include postage and parcel protection. Shipping rates are based on French postal rates. The weight of the parcel with protections is estimated to be less than 10 kg.