Charlie and the Chocolate Factory Easter Egg - Wonka portrait

In the scene where Wonka has his first flash back he and his father are sitting in the living room. Just before his father starts looking into the candy there is a shot of him sitting and you can see the fire place behind him. Right above the fire place hanging on the wall is a full picture of the grown Willy Wonka with the top hat, the cane, and the coat.