pottery vase signed stewart and marked.

This base is signed on the bottom and it has a Mark please see the picture signature Stewart in SS Stewart February 2001 there’s also a stamp on it I’m not quite sure what the stamp is again please see the picture there’s two chips on the very bottom but you don’t see I took a picture and there’s also a crack it does not go all the way down the pot is only on the top lip it’s about 2 inches long I missed it until I kept turning it around so it’s very hard to see thank you for looking