This here are some very old and new switchblades. After the American Civil War ( 1865 ), knife production became industrialized. The oldest American made production automatic knife is the “Korn Patent knife”, with a rocking bolster release. The earliest known examples of spring-loaded blades are automatic folding spike bayonets on flintlock pistols and coach guns.
As a little boy I collected knives of all types. Until the age of 12 years, I focused mainly on classic switchblades. Whether black markets, flea markets or antique stores, I was obsessed with original switchblades. Unfortunately I lost a big part of my collection a few years ago. But my passion for collecting these ancient and timeless knifes still to this day.