A University of Colorado Bouilder archeology team excavating a 1000-year-old Inupiat Eskimo house at Cape Espenberg on Alaska’s Seward Peninsula found a partial bronze artifact resembling a buckle, which is apparently even older.
Bronze-casting is a technology not known ever to have existed in any New World culture, so the artifact was presumably made in Asia and reached Alaska by some unknown early system of trade.
Some News Agency report.
University of Colorado press release.
Hat tip to Reid Farmer.