S338 – Spain 1930 – Pro Unión Iberoamericana — Correo Aéreo. Gago Coutinho and Sacadura Cabral — South Atlantic crossing, 1922; 50 céntimos, slate blue. Edifil 586. Issued 10 October 1930.
Production: Photogravure (huecograbado). Line perforation (nominally 14; individual gauge not supplied).
Condition: Mint Hinged (MH). Good overall centring with slight margin imbalance. Original gum largely present, showing a conspicuous hinge-related mark at the upper centre and nearby gum disturbance. No definite thinning established.
Collector’s note: Commemorates the 1922 South Atlantic flight expedition by Portuguese aviators Gago Coutinho and Sacadura Cabral.
Collection Grade: 3.5/5; Investment Grade: 1/5; Decision: KEEP.
