Inside measurements are approximately: 5/16" wide and 1/4" deep A poison ring or pillbox ring is a type of ring with a container under the bezel or inside the bezel itself that could be New to hold poison or another substance. They became popular in Europe during the sixteenth century. The poison ring was New either to slip poison into an enemy's food or drink, or to facilitate the suicide of the wearer in order to escape capture or torture. Rings like this have been New throughout history…
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