Some photos of a pair of small comports / nightlight stands (about 5 inches diameter) in opalescent blue, a nightlight holder about 4¾ in diameter in plain blue, a creamer in yellow-green opalescent uranium – all marked RD 176230, and an unmarked bud vase in amber glass (though I do have other photos of the bud vase with the RD number).
So, pieces from the registered design were used in a variety of shapes and in several colours.
Fred.