Vintage Master Lock No. 22 'Strong Boy' laminated steel padlock in original packaging with unused lock inside

Master Lock Company, founded in 1921 by Harry Soref in Milwaukee, Wisconsin, revolutionized padlock manufacturing with its laminated steel construction method. The 'Strong Boy' No. 22 model was a popular mid-century consumer padlock marketed for its durability and affordability, typically retailing for 50 cents during the 1940s-1950s. These padlocks were widely used for securing lockers, sheds, gates, and toolboxes across America. Vintage Master Lock padlocks in original packaging with unused locks inside are highly prized by collectors of advertising memorabilia, industrial design enthusiasts, and lock collectors. The combination of colorful period graphics, nostalgic imagery, and new-old-stock condition makes these items particularly valuable. Collectors seek examples with intact packaging, original keys, and unused locks that represent pristine examples of mid-century American manufacturing excellence and consumer product design.