Warner Bros Key To The Studio (not plastic). Just like the original. Key to the Studio. In the form of an oversized key, made of brass, designed with the famous’WB’ shield logo while one side reads. “Welcome to Warner Bros Studios”. “The Largest in the World;”. Please note this particular key is. Key, though a similar one was given to her in 1956. This key meaures 9 7/8″ x 3 3/4″ x 3/16. Real Brass key – you get the key as shown in photos. Rare – was only available at the company store. Includes a white sticker. Decal of WB logo and a decorative box.