Keystone Cutlery Co Milwaukee, WI See Pics. Pictures reflect all flaws; quality, unusual pattern. Knife measures 3 5/8. This item is in the category “Collectibles\Knives, Swords & Blades\Collectible Folding Knives\Vintage Folding Knives\Factory Manufactured”. The seller is “2855dgt” and is located in this country: US. This item can be shipped to United States.