The Vintage Metal Lunch Box with a Dome Lid from the 1930s or 1940s is a rare find with patents 1.316.240 and 1.438.417. This collectible piece is made of durable metal in the United States and is a prime example of vintage lunchboxes from that era. The lunch box is unique with its dome lid design and is a valuable addition to any collection of vintage kitchen memorabilia.