Collectible souvenir keychain from the Museum of Science and Industry featuring the word “CHICAGO” spelled out using symbols from the periodic table of elements. The design is inspired by the museum’s historic giant periodic table display that once stood in the rotunda.

The keychain creatively forms “CHICAGO” using element symbols such as C (Carbon), H (Hydrogen), I (Iodine), Ag (Silver), and O (Oxygen).

Condition:
New and never used. Original sale tag still attached. Please review all photos carefully as they are part of the description.