Sphinx is a mold etched pattern. Only 3 bowls and 3 vases were made in this pattern according to Zastowney In his book, "Lancaster Glass Company 1908-1937. The bowl pictured above is almost flat enough to be considered a bowl.
One bowl and one vase are also found in apple green. The 12 1/2 tall stretch vase was only made in apple green. It was made as an experimental piece and is very hard to find.
