Michel BASSOMPIERRE uses the lost-wax technique for all his patinated bronzes. These are "originals" in accordance with the Code de déontologie des Fonderies d'Art: the number of copies is limited to 12, 8 are numbered in Arabic numerals 1/8, 2/8, etc. and 4 are called "Artist's Proofs" numbered in Roman numerals EA I/IV, EA II/IV, etc.