Auction 84th, Lot 5 Yellow Birdoil on wooden board, around 1962, sign. on the reverse, 15,5 × 28 cm, framed Oranžový kohoutoil on hardboard, around 1962, sign. bottom left, 21,5 × 27 cm, framed Cellsoil on paperboard, 1961–1962, sign. on the reverse, 33 × 45 cm, framed, glazed