Etrich Taube by Ivan Berryman. (AP)

The extraordinary Taube (or Dove) was extensively used by the Germans as a reliable, stable observation and reconnaissance aircraft as late as 1916, despite its archaic appearance. The Taube type first flew in Austria in 1909, the brainchild of Dr Igo Etrich and employed the early method of directional control known as differential wing-warping, instead of possessing ailerons and elevators. This version was powered by a Mercedes 6-cylinder inline engine and is a two-seat variant, much favoured by the Germans.

Limited edition of 50 artist proofs.

Image size 26 inches x 17 inches (66cm x 43cm)