Newbridge Silverware EPNS Silver Geometric Design Choker EPNS is when a thin layer of sterling silver is deposited on the base metal. The clasp is discretely hidden on the side so that the necklace stays in place and does not turn. Do to worry about any tarnish, to prepare for these photos I took Wieman's silver wipes and the piece shined up in seconds. Literally seconds. The designer, Newbridge Silverware, as been around since the 1930s and the company started to include jewelry in the 1990s Very interesting, comfortable piece.