Medal shape: oval.
Obverse design: King George VI, head.
Obverse text: "GEORGIVS VI D : G : BR : OMN : REX F : D : IND : IMP : ".
Reverse text: "AIR EFFICIENCY AWARD" (on plain background).
Suspender: ornate bar, eagle (with outstretched wings).
Ribbon colours: green & light blue.
Ribbon pattern: GREEN/light blue/green/light blue/GREEN (light blue stripes each 3 mm wide).
King George VI issue specimen example; the award was instituted in 1942 and granted for '10 years efficient service in the Auxiliary and Volunteer Forces of the UK and Commonwealth'. Obverse design (Royal effigy) by T H Paget (initials 'HP' at the base of bust).
Reference : Dorling, H T (Captain) & Guille, L F : 1970 : Ribbons and Medals : George Philip, London : p 125