It's the famous optical illusion
(called the Rubin's vase or figure-ground vase)
with a nice personal touch.
Imagine one of these in your home or office on a stand that's about your height. You walk in, stick your face against the edge, and say, "See the resemblance?" The artist, sculptor Brian Cox, cam make your mug in solid brass, aluminum, or stainless steel.
Metal Portraits - "Sculpture to fit your face">>