Vintage Toy Trade Ad from Playthings Magazine
The Keystone Mail was once considered the aristocrat of all metal planes. Built in the 1920s for the U.S. Postal Service, this biplane was the fastest mail carrier of its time, reaching speeds of 130 miles per hour. Its all-metal construction made it stronger and more durable than its predecessors, and it was also the first plane to have an enclosed cockpit. The Keystone Mail played a significant role in shaping the history of the aviation industry, paving the way for future innovations and advancements.
