This Lone Ranger Atomic Bomb ring was distributed by Kix cereal in the late 40's, for 15 cents and a mail-in box top.
It was actually a spinthariscope containing radioactive Polonium-210 (one of the most toxic substances out there).
A child would take the toy into a… pic.twitter.com/4ZPqn0LkdN
— Brian Eastwood (@BrianEastwoodx) March 26, 2026
h/t Mauser
