15 Sep 2006 (VietNam Net Bridge) – A short news story on two cowry shell finds in the Bat Cave (no, not that one) in Quang Tri province. According to the article, cowry shells have been recognised as currency between 2,500 and 5,000 years ago.
Ancient money discovered in Quang Tri
Archaeologists from the Viet Nam Institute of Archaeology and the Quang Tri Province Museum have unearthed two ancient cowry shells during an excavation at the Bat Cave in Quang Tri Province.