Sewant
From Wikipedia, the free encyclopedia
Sewant (or siwan) is the black and/or dark purple black shell bead system of the 1600s in Nieuw Nederlandt of what is currently the States of New York, New Jersey, Pennsylvania, Connecticut, Delaware and Maryland. This fiat currency system was introduced to the English at Plymouth Colony Plantations in 1627. One black Sewant was equal to two white wampum.