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  Marks on German, Bohemian, and Austrian Porcelain: 1710 to the Present - Robert E. Röntgen - Google Books

  https://books.google.de/books?id=ZSXrAAAAMAAJ&q=carl+schneider+erben+gr%C3%A4fenthal&dq=carl+schneider+erben+gr%C3%A4fenthal&hl=

  European porcelain was born in the German city of Meissen, in 1708. This is the most comprehensive source book available to show the marks used by manufacturers, factories, and decorators from the beginning to the present. Included are more than 3,300…

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  Marks on German, Bohemian, and Austrian Porcelain: 1710 to the Present - Robert E. Röntgen - Google Books

  https://books.google.de/books?id=ZSXrAAAAMAAJ&pg=PA270&dq=%22VEB+Vereinigte+Porzellanwerke+K%C3%B6ppelsdorf%22#v=onepage

  European porcelain was born in the German city of Meissen, in 1708. This is the most comprehensive source book available to show the marks used by manufacturers, factories, and decorators from the beginning to the present. Included are more than 3,300…

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