Cowrie shells were predominantly used by many Igbo communities as a recognized medium of exchange before the introduction of colonial monetary systems. They served as a standard measure of value in local and regional trade, facilitating the exchange of agricultural produce, crafts, livestock, and services.
Cowries were also used in social and cultural transactions, including bride wealth payments, fines, and ritual obligations. Their circulation reflects the existence of organized market networks and established economic practices within Igbo society. The gradual decline of cowrie usage occurred with the expansion of European trade, colonial administration, and the introduction of coin-based currency.