Mid-Century White Pottery Pitcher/ Marked USA "924 ? " / Unknown Maker and Age

A very nice, probably mid -century 9 1/2" pitcher. Love the design and it's finished in a off white glaze. The bottom does have marks. The USA is clear enough but the numbers which I believe are "924" and another mark are buried and obscured in the glaze. Hard to ID this one and I think the third mark might be the company. -Mike-