Pair of sconces model Pistillo for Studio Tetrarch for Valenti Luce and dating from the 1960s. No ball is missing. The structure is made of chrome plastic. There is a slight difference in the color of the chrome between the two sconces but not very visible. No discomfort at the decoration level. Some small pitting of the chrome visible on the detail pictures. A pair of Design sconces that will undeniably mark your interior.