Pottery pitcher, slip glaze?

About 7 inches tall, has a repaired chip on top rim. From my searches I think this is slip glaze, and the 1/4 means quart. Would you agree? And any thoughts as to the shield shaped decoration? Not well stamped, I can't even tell if the surround is a patterned decoration of letters.

 

It’s either a quarter of a lite or a quarter of a pint. Measure it and you will see. If a litre you can check European pieces .

 

Thanks John. Just checked. It holds about 4 1/2 cups, so pretty close to a full quart or a full liter.

 

So it’s a quart then which makes USA most likely if you are in the States

 

Now that is some brilliant detecting! Lehner's shows this mark in use since 1917. It says Maurice A. Knight on top, then "acid proof chemical stoneware" around the sides and bottom (in all caps).

 

INH, again, you are a marvel. Thank you. Pitcher is a little different, but emblem is the same.
Only sold I can find is as part of a lot at Crocker Farm Auction. Lot of 4 sold for $29.
The writing around the knight says Maurice A Knight Acid Proof Chemical Stoneware.

 

Sniped.