Closures Closures 1979-1981 1979, Brooch. sterling, gold plated silver. Diameter: 9 cm. 1979, Brooch. sterling. Diameter: 9 cm. 1981, Brooch. stainless steel, gold plated screen, sewing needle. Diameter: 5 cm. 1981, Brooch. niobium, sewing needle, silver plated screen. Diameter: 5 cm.