That is a handcrafted pottery piece. It’s a classic sponge ware piggy bank formed similar to a literal pig sitting down on 4 legs that has a cork in The underside. The human body is painted in blended shades of blue and white, Pretty much resembling a marble style. https://collectables-online-202382357.fireblogz.com/50360007/prince-william-ware-piggy-bank-an-overview