What Was Locked?

Killen was on his way to the auction house where the locker was situated. Being a professional dealer he had his thought of finding something valuable and worth the money inside the locker. He has heard so many stories where people have discovered some antiques inside the abandoned lockers and even he was excited and the thought of making such discoveries like other people was somewhere in the back of his mind. He remembers one story in particular which made him more excited.