Igbo Coiled Manilla Currency, Based

Rings of dark copper, stacked like a spring, riding a delicate cradle.

Igbo makers of central Nigeria, West Africa, produced coiled manilla currency like this in copper in the 20th century. Manillas were commonly traded and kept as stores of value, and some were later worn or displayed. Here around twenty tight loops run between two flared ends, the surface a dark, almost chocolate brown with traces of green. A black metal stand with a curved bracket supports the coil from beneath and lifts it into view.

About 8 inches wide. Currency that looks better than any note in your wallet.