Marc Batifol (born in 1931) Tower at night; Vertical and horizontal; Superposition; Underground; Unknown altar; Celestial debris 1 and 2; The work of Penelope. Engraving with gouge. The sheet : 510 x 650 mm. Printed in colors. Meeting of 8 proofs on vellum, variously justified, titled and signed in pencil. Traces of oxidation, tiny accidents, some fixed by pieces of adhesive under matting on the back. All margins.