[set of 4] Mon drapeau/ Mon drapeau/ Papillon sur l'eau/ Nuages sur continent

a set of four works (two paper reliefs with embossing and perforations, one woodcut, and one etching), 1974/ 1974/ 1966/ 1964, each signed, two titled and dated in pencil, numbered 130/150, 37/150, 18/30, and H.C.19/30 respectively, each framed#
Sheet: 28.6×23.3cm/ 28.6×23.3cm/ 18.0×47.0cm/ 15.0×10.7cm
Provenance: nantenshi gallery, Japan
100,000-150,000 JPY