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Here's a similar one in blue: Ruckels Pottery / White Hall Pottery Inverted Pyramid - Picket Fenc...
"This primitive stoneware mixing bowl was made by A.D. Ruckels Pottery of the White Hall area of Illinois. That area was known for some of the best stoneware made in the U.S. during the late 1800s to the early 1900s. The blue stoneware bowl is decorated in the Inverted Pyramid and Picket Fence patterns. This could have been made at any time between 1870 and the late 1920s."
However, it doesn't have U.S.A. mark on the bottom so not sure if it's the same era. But, it definitely gives good pattern ID for stoneware.
Wow, thanks, Ellene!
You are welcome, Bonnie!