Angola Carlos I with Inverted and Displaced Overprint

Angola · 1912 · 5 Centavos

The stamp features a portrait of King Carlos I of Portugal, a standard key type design for Portuguese colonies. It bears an overprint 'REPUBLICA PORTUGUESA' and '5 CENTAVOS' on the original 2½ Reis stamp, with the '5 CENTAVOS' overprint notably inverted and displaced.

This stamp reflects the political transition in Portugal from monarchy to republic in 1910, with its colonies like Angola issuing overprinted stamps to reflect the new government. The inverted and displaced overprint represents a significant and highly sought-after philatelic error.