Large irregular parallelepiped cachet engraved with intersecting lines forming lozenges Black soapstone. Mesopotamia, Tell Hassuna, 6th millennium B.C. Height: 4.3 cm for the largest. Five stamps with similar or related decorations are included. Provenance : - Former collection of François Bouruet Aubertot, built up between 1970-1990. By descent. - HDV Verrieres-Le-Buisson sale, December 18, 1982, lot 93.