Antique Art Nouveau Tiffany & Co. Silverplated 5 Piece Knife Carving Set. Made by Tiffany & Co. During the late 19th. Each piece is signed on the handle TIFFANY & CO. Larger knife marked on blade TIFFANY & CO. Larger knife measures 14 1/16″ in length, 1 1/4″ in width, and is 7/8 in depth. Good condition with just some very light scratches. Knives have been sharpened a fair bit.