This striking three-stamp set from République du Tchad celebrates the ancient Sao civilization, renowned for its terracotta and clay artistry uncovered in the Lake Chad region. Each stamp reproduces artifacts excavated by archaeologists Lebeuf and Pales, including a clay fishing-weight head (5F), a powerful ancestor mask (15F), and an expressive ancestor statuette (25F). Issued during the 1960s, the series highlights Chad’s rich pre-Islamic cultural heritage and early sculptural traditions. Printed in bold two-tone intaglio, these stamps are highly desirable among collectors of African archaeology, ethnographic art, and Franco-African postal history.