This is a posable action figure from the Nendoroid series.
From Good Smile Company:
From the anime series "Layton Mystery Detective Agency: Kat's Mystery Solving Files" comes a Nendoroid of Professor Layton! He comes with three face plates including a standard expression, a smiling expression and a closed-eyes expression.
He also comes with his tea set and his trunk. Be sure to add him to your collection!