Hocking's Queen Mary pattern was made from 1936 to 1949 in both pink and crystal .
This water tumbler is 4" tall and holds 9 oz. A juice tumbler which only holds 5 oz was also made in this shape which has a deco flair.
Jim Retzloff received a copy of pages 18 and 19 of Hocking's Catalog C from Phil Hopper. These pages are headed:
"Queen Mary" (page 18) Prismatic Crystal (page 19)
It appears that Queen Mary was the name of the pattern and prismatic crystal was a description of the type of pattern. There was no mention of a "Prismatic Line."