South Africa 1925 Airmails UPU Presentation Sheet

1925 Airmails: Set of four 1d - 9d (SG 26-29) affixed to OFFICIAL SOUVENIR SHEET prepared for distribution through the UPU. Inscribed "Avec les compliments du Postmaster-General de l'Union de l'Afrique du Sud. Avril, 1925.". Fresh and VF for these. Rare.