Macbeth-Evans first introduced tableware items during the late 1920's and expanded into complete dinnerware lines in 1930.

The most popular color used in tableware was pink, and the glass made was thinner than other companies of the time, thus more fragile. 

Pattern names were referred to by letter. Ruby red and Ritz blue colors were used in the 1930's glassware, beginning with the American Sweetheart pattern. American Sweetheart (1930-1936) was produced in pale pink and translucent white. The pattern was an elaborate design of lacy swirls, finely detailed and quite feminine, created from a mold-etched pattern. 

The plate you see here is in good condition.