“Stranger things” was based on an alleged actual secret project by the US government. 
Get the keytag that might possibly uncover the secret and give you entry to the “upside down”. 
Front side only. MONTAUK PROJECT. 
Proximately 3 1/2“ x 1 1/2“. 
Printed in gold and black key tag.
Produced on adorable plastic
Made in the USA.