Orizzonte bicromo (-) ; Orizzonte bicromo (+) (Bicolour Horizon (-); (Bicolour Horizon (+))

Antonio Calderara (1903-1978) Orizzonte bicromo (-); Orizzonte bicromo (+) (Bicolour Horizon (-); (Bicolour Horizon (+)) each: signed and dated 'Antonio Calderara 1970' (on the reverse) oil on board, in two parts each: 10 5/8 x 5 ¼in. (27 x 13.5cm.) Executed in 1970