Courtesy of the Library at the Katz Center for Advanced Judaic Studies, Kislak Center for Special Collections, Rare Books and Manuscripts, University of Pennsylvania

A fourteenth-century Franco-German Mahzor (prayer book used by Jews on the High Holidays of Rosh Hashanah and Yom Kippur) written on vellum.
It had been trimmed but important marginalia were kept along the side.
The above image is the interior of a former image:



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