Our manual shows you a photo of the lock and gives you data on the manufacturer, age, construction materials, and even the value of the padlock! Plus, we tell you how to make an operating key, as well as information on which blanks to use, etc. A "Notes" section gives a history of the lock as well as any technical information needed to help you make a working key. Hundreds of types of locks are covered including iron, steel and brass padlocks.