This one looks like it was made out of wood like a barrel. To find the Phantomlete, you'll need to use the EMF in the tunnel behind the double doors to the cellar.
How do I open the double doors?
Take two steps into the tunnel so that you're standing directly next to a lamp on your left.
Pull up the EMF, then put it away. You will now find a hotspot on the wall to the left of the lamp.
Click on that hotspot, then pull out the brick to find the egg.