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You might want to try this website www.gotheborg.com. He specializes in antique Chinese and Japanese porcelain and may be able to help
I look at all of his marks but was not able to find this one. I find it in a couple of places and everyone is saying the same thing, can anyone identify this mark?
I think it's Seiei & Co. Mark is exactly the same except for the bird in the center. I believe the center figure indicates the model or factory. They made luster ware. Circa 1930s. Company closed 1962.
Gotheborg #738, #939, and #1370.