Rex was the most popular of the Fifth Avenue compact lines, which included Dorset, Columbia, Dale and Zell. During WWII Rex maintained popularity and worked around the metal shortages by producing Lucite cases. Their ads played up both the femininity and functionality.
Unique to Rex's design was their giant "Flapjack" size. During the 1940's they did soft muted colors with floral designs. The diameter of the compact is 4 3/4". The sweet floral design has pink, blue, yellow, green and brown against the porcelain colored Lucite. Rex wanted their compacts to resemble porcelain. Rex signed the ribbon that runs across the powder puff. The back has some scratches.