Gilbert U-238 Atomic Energy Lab Toy (1950-1951)

By 1952 the Gilbert Toys American Flyer Trains catalog had replaced the U-238 Atomic Energy Lab with the No. 11 Gilbert Chemistry Atomic Energy Set. Sometime in late 1947, Gilbert’s competitor, the Porter Chemical Company, became the first to produce laboratory kits for children that included an atomic energy component. The atomic energy components of kit No. 10 were “actual specimens of Uranium Ore, “The Story of Atomic Energy,” [and a] Spinthariscope.”

Source: www.orau.org