This striking triangular brown stamp from Chad, issued in 1959, belongs to the nation’s first Timbre-Taxe (postage due) series. It features a detailed line engraving of a hippopotamus, a creature native to the rivers of Central Africa, designed by Munier. The stylized illustration captures the animal’s sturdy presence against a textured background, reflecting the artistic elegance of early Chadian philately. Such triangular issues were distinctive among African territories and remain sought after by collectors for their unique format and wildlife motifs.