4x4x7.5" tall. c. 1920s. Consists of two separate molded pieces of glass, upper piece covers lower piece which consists of three chambers that held individual sugar cubes. Cubes could then be dispensed at bottom of each chamber. A graphic of "Jack Frost" holding cube reading "100% Pure Cane Sugar" appears above text "Jack Frost/Tablet Sugar/National Sugar/Refining Co." This image and text is repeated three times (though faded from its original color). Top is held into place with a nickel plated threaded knob (70% of plating remains). An area of roughness appears, but not visible at opening where knob is attached (not a crack/chip). A well designed and rare dispenser. Fine.