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R.S. Prussia and Gouda Marks

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R.S. PRUSSIA Pottery Dates Mark Erdmann Schlegelmilch 1880s-1890s Reinhold Schlegelmilch Late 1880s-1917 Carl Schlegelmilch 1882-1919 Oscar Schlegelmilch 1890s GOUDA Zenith Pottery Factory 1891+ Regina Art Pottery 1898-1910
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