Abrammuo (goldweights)
Cast-brass counterweights used across Akan societies to measure gold dust in trade, manufactured by lost-wax casting from roughly the fifteenth century until c.1900.
Abrammuo (singular mramuo) are the brass counterweights of the Akan gold-dust weighing system, cast by specialist smiths using the lost-wax (cire perdue) process. They range from small geometric forms — discs, coils, crosses, cylinders — to figurative pieces encoding proverbs, court scenes and cosmological references. Timothy Garrard's foundational research established a typological and chronological sequence based on changing weight standards and alloy composition, demonstrating that the system responded to successive trade relationships with North African Saharan partners and, from the sixteenth century, with European merchants on the Atlantic coast.
The figurative weights are among the most documented examples of proverb-based iconography in African art: each recognisable type corresponds to a specific saying (ebe), and the weighing transaction was itself an occasion for moral commentary. Production of trade-use weights effectively ceased around 1900 following British currency imposition; the twentieth century saw large-scale manufacture of imitation weights for tourist sale, making authentication one of the central challenges in collecting this category. Scholarly consensus, following Garrard and Doran Ross, holds that specific gravity, surface finish, and conformity to documented weight standards are the most reliable diagnostics.