In 1858, Angola, as a Portuguese colony, did not have a unified, independent currency system. The economy was primarily driven by the transatlantic slave trade, which was still legal at the time, though under increasing international pressure. As such, the most common "currencies" were not minted coins but rather trade goods and commodities. The most significant unit of value was the
escravo (slave), used as a benchmark for large transactions, alongside traditional African currencies like
libongos (shells, specifically nzimbu shells from Luanda Island) and rolls of imported cloth, especially from Brazil.
The official Portuguese currency, the
réis, was present but its circulation was limited mostly to administrative centers, port cities, and among the colonial elite. Coins from other nations, particularly Brazilian
réis and Spanish-American silver
pesos or
patacas, also circulated due to extensive trade links. This created a complex and fragmented monetary environment where transactions between the Portuguese administration and international traders used coin, while internal and regional trade often relied on commodity money and barter.
This multi-layered system reflected Angola’s position in the mid-19th century Atlantic economy: a slave-based colony with weak formal institutions, deeply integrated into Brazilian and Portuguese commercial networks, yet still operating on older African economic foundations. The reliance on the
escravo as a unit of account underscored the brutal reality that human beings were the colony's primary export and de facto standard of value, a situation that would only begin to change as the slave trade was gradually abolished in the decades following 1858.