GROUP OF 3 TIFFANY & CO. STERLING CHAIN NECKLACES: 1) Triple strand rope chain, stamped ''Tiffany & Co. Italy 925'', 16''l. 2) Tiffany & Co. Heavy sterling rope chain with 14K fine gold chain twisted in, bears a TC tag, 18'' long. 3) Tiffany sterling chain, unmarked, 16''l. 5.38 oz.