78/4773 Zwerver, D. (1932-2010). "Sanssouci". Etching, aquatint and drypoint, 17,2x13,3 cm., signed, titled, "'05" and "HC XIII" in pencil. Koornstra, M.T. (1912-1978). (Man in bed with two onlookers). Lithograph, 18,5x29 cm., signed "MT Koornstra 70" and "13/100" in pencil. - AND 4 others, by W.D. KUIK, JAN MALSEN, GER BOOSTEN, DIRK BAKKER (drawing).