Lead Pig for Shielding for Radioactive Source Material
As you can see in the last picture, the bottom of this item is missing the bottom plastic cap.
Size: 3.7″ (94mm) tall and 2″ (50mm) maximum diameter
Interior dimensions: 2.5″ (64mm) deep with a 1″ (26mm) diameter
1/4″ thick wall
Approximate weight: 1Lb, 6oz
These containers were used in a hospital setting to transport Iodine-123 and may contain traces of lab markings that have been wiped off with alcohol.