SILVER 'LA TENE' BROOCH Celtic Iron Age, c. 2nd century BC. Silver La Tène I type bow brooch, with a deep bow, pin to reverse, and a foot with a lateral catch, decorated with punched crescents. Dimensions: 44x8 mm. Intact and functional. The La Tène culture is a predominantly Celtic culture belonging to the Iron Age, also known as Iron Age II. It developed between ca. 450 and 25 BC. Its name comes from the La Tène archaeological site discovered in 1857 at Marin-Epagnier, on the shores of Lake Neuchàtel in Switzerland.