Circa 1936-1938: The Riviera shakers in spuce glaze are very unusual and hard to find. Dipped in spruce for the Tango line, the spruce glaze makes a delightful addition to blend the Fiesta, Harlequin and Rivera vintage pottery lines. This example is perfect, without damage and includes the original corks. Collectors will rejoice at finding these elusive shakers in the marvelous spruce green glaze.