Oosterpoort Groningen # CORNELIS JETSES # 1978, nm-
Opalka ao, Budapest # GEOMETRIA ES METAFORA # 1988, nm+
Openbare Bibliotheek Vlissingen # WIM HOFMAN # 1991, nm
Opera Gallery # PABLO ATCHUGARRY # Book + invitation,2018, mint--
Opkomende Zon, surrealism # CARLOS REVILLA # 1977, near mint
Orange House # AART ROOS #
Orangerie des Tuileries # CHAIM SOUTINE # 1973, nm--
Orangerie des Tuileries, Paris # MAX ERNST # 1971, nm
Orangerie Koln # OTMAR ALT # includes 6 original seriegraphs, 1974, nm+
Orangerie Multiples Köln # BERROCAL # 1970, nm
Oranje Nassau, Queen Beatrix # BIJ DE PRINSESJES # ca. 1948, NM
Orez # HANS-J. SPESSHARDT # 1966, nm
Original prints # W.J. ROZENDAAL # 1952, nm+
Orion Art Gallery # PIERRE LAHAUT # 2001, nm
Ormeau Bath gallery # ARNO KRAMER , Nightwound # 1999, mint
Ormeau Baths gallery # TJIBBE HOOGHIEMSTRA # special cover. 1999, nm++
Ortemp galerie # MOY # Lescure, 1975, nm+
Oscar Lourens #POSSESSING SPACE # 2008, numb, mint
Ostende # l'Expressionisme FLAMAND # 1961, nm-
Ostergard # BENT WOOD AND METAL FURNITURE 1850-1946# 1987, nm
