Circa 1937 to 1938: Bottom Rings: To find turquoise nesting bowls with inside bottom rings is a treat, since turquoise was the last of the original six glazes developed, not available until the summer of 1937, and inside bottom rings were removed from the bowl by the end of 1938. This example is in spectacular condition, without damage or issues, just an all around beauty. Nests perfectly. Marked in the mold on the bottom with the early impression: "fiesta HLCo Usa 2". Measures 5 7/8" w x 3 15/16h"