Issued during the Belgian administration of Ruanda-Urundi, this 15 centimes stamp features a finely detailed illustration of a Protea flower — a symbol of African flora known for its striking appearance and resilience. Printed by the renowned Swiss firm Courvoisier S.A., the design showcases a golden bloom with red-tipped petals set against a soft green background, framed with elegant red typography. This issue is part of a beautiful definitive flora series celebrating the region’s botanical richness. A prized collectible among African philately enthusiasts.