ALEXANDRE BENOIS (1870-1960) Three costume sketches for the ballet 'Swan Lake' by Pyotr Ilyich Tchaikovsky inscribed in pencil 'Le Lac des Cygnes' (bottom left), 'le dos des costumes...' (top left and right) pencil, watercolour on paper 23.5 x 15 cm (each) ALEXANDRE BENOIS (1870-1960) Three costume designs for the ballet 'Swan Lake' by Pyotr Ilyich Tchaikovsky inscribed in pencil 'Le Lac des Cygnes' (lower left), 'le dos des costumes...' (upper left and right) pencil, watercolor on paper 23.5 x 15 cm (each)