SCG3890 - Chad 2 Francs Red Postage Due Stamp – Cave Painting Design (c.1960s)This triangular postage due stamp from Chad features a striking red depiction of prehistoric rock art, showing stylized animals such as an antelope like figure. Issued in the 1960s, it belongs to a series of timbres taxe (postage due stamps) that highlighted cultural and historical motifs. The triangular format makes it particularly appealing to collectors of unusual stamp shapes. Designed by Munier, it reflects Chads philatelic tradition of combining