Liberian Kissi iron currency (3 units) Kissi iron currency, commonly known as Kissi pennies (or kilindi), is a traditional form of West African "natural money" used from the late 19th century through the mid-20th century across present-day Liberia, Sierra Leone, and Guinea. These unique pieces consist of hand-forged, thin, twisted iron rods, featuring a flattened spatula-like "foot" (kodo) at one end and a T-shaped "ear" (niling) at the other. Length (longest one): 12 inches $80-120