50 Centavos

São Tomé and Príncipe's first locally-denominated coinage — this series was authorized under Portuguese colonial administration as the islands transitioned away from relying entirely on mainland Portuguese currency. The 1928–1929 dates reflect a two-year striking window, with pieces distributed to the colony's cacao plantation economy, where the islands had become one of the world's leading producers by the early twentieth century — a trade built almost entirely on contracted labor conditions that drew sustained international scrutiny in the decade before these coins were struck.