Circa 1937-1946: Introduced in 1937, the water tumbler highlights the distinctive concentric rings that are one of the distinctive features of Fiesta pottery. Here the rings adorn the gently flared top of this great early piece. Available only in the original six colors, with red being discontinued even earlier, the water tumbler set is a great display and wonderful to use - if you dare. This example in original yellow is in excellent condition, marked in the mold.