Vintage Yale & Towne Security Keys - Historical Locksmithing Artifacts #3890427 (License: Personal Use)

This black-and-white illustration depicts three antique flat-blade keys manufactured by Yale & Towne Manufacturing Company of Stamford, Connecticut, USA. Each key features the word “SECURITY” vertically stamped on its blade and a shared bow inscribed with the company name and location; the central key is numbered “50000”. The design reflects early 20th-century locksmithing craftsmanship and mass-produced security hardware.

Used on heritage locksmithing websites, museum digital archives, antique tool collector blogs, or vintage hardware e-commerce pages; matches user intent for historical research, collectible identification, or visual reference for restoration projects.