This stamp from São Tomé and Príncipe belongs to the iconic Ceres series, originally issued during the Portuguese Republic era in the early 20th century. It features the allegorical figure of Ceres, the Roman goddess of agriculture, symbolizing prosperity and growth. The design is printed in red and shows a black overprint adjusting the face value to 2 centavos. Such surcharges were commonly applied to meet new postal rates. The bottom inscription clearly identifies the colony, making this a collectible example of Portuguese colonial overprints. Sought after for its historical and philatelic significance, it reflects the dynamic postal history of the islands.