Trial Color Proof. Signed and dated in pencil lower right: 'L. Calapai '58'; titled and inscribed lower left: 'Nocturne II (Trial color proof)'. Inscribed lower left margin: 'A.'. Embossed lower right with the artist's printer's mark: 'LC imp'. A fine impression in fine condition on sheet measuring 18 1/8 x 14 3/4 inches.