Explanatory notes
… in any material (stone, reconstituted stone, terra‑cotta, wood, ivory, metal, wax, etc.), in the round, in relief or … either as a model for the execution of the work in stone or wood, or for preparing moulds for casting in metal or wax. … therefore be reproduced as two or three “copies” in marble, wood, wax, bronze, etc., and a few in terra‑cotta or in …