I know nothing about knives, but will do my best to describe it. Spring assist mechanism functions perfectly, blade opens strong and fast. The slide lock mechanism also works, but appears to be missing most of the button. 2 things that should be repaired. 1 the spring underneath the actuator button needs to be replaced/repaired.When the knife is open, to get it to close and lock, you have to turn the knife upside down so the button pops out, then close it and lock it with the slide lock. 2 The blade is NOT sharp at all! I don't know how to sharpen knife blades, so I won't even try. No chips or cracks on the body. The item "Vintage 1950's 11 Italian Folding Knife Spring Assisted by EIG Cutlery Italy" is in sale since Saturday, December 29, 2018. This item is in the category "Collectibles\Knives, Swords & Blades\Collectible Folding Knives\Vintage Folding Knives\Factory Manufactured". The seller is "javman74" and is located in Fair Lawn, New Jersey. This item can be shipped worldwide.