This striking triangular postage due stamp from Chad, issued in 1961, carries a face value of 1 franc. Printed in deep blue, it depicts stylized antelopes inspired by prehistoric rock paintings, celebrating the country’s ancient Saharan art heritage. The unique triangular format and bold design make it stand out among classic African issues. Marked “TIMBRE TAXE”, it was intended for fiscal and postage due purposes. A fine example of mid-20th-century French-influenced African philately, highly desirable for collectors of triangulars and African art themes.