Van Briggle Blue Onion Turquoise Blue Vintage Art Pottery Vase

This vintage Van Briggle has a deep turquoise and blue color. It does have crazing throughout, which photos will show, and is clean and in great shape. I am not sure why the bottom of it is so hard to read the Van Briggle mark but it is there. This is a mystery. Also one of the onion leaves has little detail in it, another mystery (shown in the first photo) Clean inside and a nice piece. I would be happy to try and answer any questions. Height is 4 3/4' tall. 11 1/2" around the widest part.