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Jerry & Deb Kessler, medium-large studio pottery jar signature, pottery mark. Loess Hills, Iowa, USA. American.

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Mike Grafa Pottery Marks and California Pottery

Matsui Tosen, Bizen, Japan, Bizen-yaki Japanese studio pottery

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Jerry & Deb Kessler Studio Pottery

Bob Blanchard studio pottery, Allentown PA area, was assistant to Raymond Gallucci.

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Mark Hewitt Pottery Mark Pittsboro, North Carolina, USA