Native Americans crafted tubular shell beads from clams that were called sewan which were used as currency with the colonists.
Sewan are shells used as money by some native North Americans.
An example of sewan is the money used by native Americans who lived on Long Island.
shells used as money by the Algonquian Indians
Origin of sewanDutch from unattested Delaware dialect, dialectal word for unstrung wampum beads from root sew-, to scatter