This antique letter opener by A.M. Mantia Inc. is a beautiful addition to any collection. With a 6 inch stainless steel saw blade and a lever lock type, this letter opener is both practical and stylish. The bone handle adds a touch of elegance to the piece, making it a great gift for those who appreciate the finer things in life. The Colonial Prov. USA white Bon letter opener is an original and comes with one serrated blade. It is a factory manufactured item that falls under the category of vintage folding knives, collectible folding knives, and knives, swords & blades. The manual opening mechanism and the tools offered by this letter opener make it a reliable and efficient tool for everyday use.