Vintage MCM USA Pottery (Shawnee?) spatterware planter 4001

A sunny yellow and white MCM planter from the 1960s. Marked on bottom: USA 4001, this planter is glazed in yellow with a white splatter glaze. Measures 6” x 3.75” I’m good vintage condition with no chips or cracks. There is some discoloration and crazjng on the inside of the piece. A wonderful addition to a USA pottery collection. Makes a great housewarming gift.