John Harwood (B. 1954) "Science - Jet Engine" Signed lower right. Airbrush Paint on Line's & Airbrush Board. Provenance: Collection of James A. Helzer (1946-2008), Founder of Unicover Corporation. This painting was originally published on the Fleetwood First Day Cover for the Westminster Collectors Society 37P Science - Jet Engine stamp issued March 05, 1991. The introduction of radar enabled Great Britain to repulse Hitler's air blitz, while the jet engine allowed man to fly higher and faster than ever before. A sleek jet aircraft flies toward us in the artwork, while a sweep of radar tracks its course. Image Size: 9.75 x 17.25 in. Overall Size: 12.75 x 17.75 in. Unframed. (B12722) See More