Karel Appel (1921-2006) _Two Fisle Birds_ signed and dated 'K. appel '57' (lower right) gouache and charcoal on paperboard 18 1/8 x 25 in. (46 x 63.5 cm.) Executed in 1957....

KAREL APPEL (1921-2006) _Loving Each Other_ signed 'Appel' (lower left); signed again, titled and dated 'Loving each other appel 1971' (on the reverse) oil on canvas 36 x 28 ½ in. (91.4 x 72.4 cm....

KAREL APPEL (1921-2006) _Sans titre_ signé et daté 'appel 77' (en bas à gauche) acrylique sur papier monté sur carton plume 178 x 79.5 cm. (70 1/8 x 31 ¼ in.) Peint en 1977....

Karel Appel (1921-2006) _Oiseau (Bird)_ signed 'Appel' (lower left) oil on canvas 88.5 x 116cm. Painted in 1964...

Karel Appel (1921-2006) _Let's Face It_ signed 'Appel' (lower left) oil on canvas 59.5 x 71cm. Painted in 1964...

Karel Appel (1921-2006) _Tétes dans Temp__ê__te (Heads in __the Tempest__)_ signed and dated ‘1960 Appel’ (lower left) oil on canvas 97 x 146cm. Painted in 1960...

Karel Appel (1921-2006) _Composition_ signed and dated 'ck.appel '54' (lower left) oil on canvas 133 x 110cm. Painted in 1954...

Karel Appel (1921-2006) _Untitled_ signed 'appel' (lower right) oil on canvas 100 x 81cm. Painted _circa _1964...

Karel Appel (1921-2006) _White Mask_ signed and dated 'CK. Appel '58' (lower right) oil on canvas 96.5 x 129.5cm. Painted in 1958...

KAREL APPEL (1921-2006) _Personnage_ signed and dated 'appel 1960' (lower left); signed, titled, inscribed and dated 'Personnage 1960 martha Jackson New York appel' (on the stretcher) oil on canvas...