A folding pocket magnifier with a leather case is a portable tool for viewing small objects and text. Many of these items are considered vintage or antique, with some dating back to the late 19th and early 20th centuries. The cases are often made of leather, while the lenses and frames can be made from a variety of materials including brass, nickel-plated brass, or bakelite. These magnifiers are often used for inspecting jewelry, coins, stamps, and other collectibles.