This beautiful 1956 semi-postal series from Guinea Española (Spanish Guinea) was issued to raise funds “Pro-Indígenas” (for the welfare of indigenous peoples). Printed by F.N.M.T. (Fábrica Nacional de Moneda y Timbre), the set highlights the colony’s tropical flora in elegant engraved designs.

• 5+5 Cts – Orquídea (Orchid): A striking green-toned design showing a native orchid, symbolizing the lush biodiversity of Equatorial Guinea.

• 5 Cts – Strophanthus Kombe: A brown design depicting the tropical vine known for its medicinal alkaloids.

• 15+5 Cts – Strophanthus Kombe: A higher-value brown-orange version with the same floral motif, emphasizing both aesthetic and botanical interest.

The delicate engraving and balanced compositions make this one of the most graceful flora-themed colonial issues of mid-20th-century Spain.