WW2 Spitfire Fighter Plane salvaged perspex AG wing fundraising badge

An unusual original Second World War period Royal Air Force one-off workshop trench art pin badge, skillfully handcrafted from salvaged perspex from a fighter aircraft windscreens in the form of a large Air Gunner half wing and sold to raise funds for the war effort. Very good condition, complete with safety pin style device.Wingspan approx 88mm.