South Africa 1938 SAA & IA Accelerated Service Cape - London

1938 SAA & Imperial Airways First Flight envelope ACCELERATED SERVICE Cape Town to London via Durban. Fanked KGVI Coronation 1½d tied Cape Town machine cancel 9.IV.38. Endorsed "First Accd IAL Fly. Boat All Up 10.4.38 ex Durban". The envelope, prepared by Park Smith, Aero-Phil,shows a Zulu warrior over a map of Southern Africa. VF, uncommon. Ex Hudson