South Africa 1918, 'MAKE YOU SIXPENCE FLY' aerial first flight postcard to Observatory.

1918 (OCT.7.) AERIAL POST CARD addressed locally to Observatory with 'crested flying wings' MAKE YOUR SIXPENCE FLY inscription bearing 1/2d green 'head' adhesive tied by AERIAL POST/SOUTH AFRICA cds. Some edge crumpling at right but a scarce first flight card with small message reading 'The war will soon be over'.