M5891 Leaf from a Gradual, Illuminated Leaf on Vellum, Poland, 1632  Manuscript calligraphy on animal parchment, in a black script.  Musical notation on a four-line staff, in black ink.  Headings, rubrics and ruling in red.  From a Gradual executed in a Dominican convent in Poznan (Posen) Poland (Poland's intellectual center and one of its oldest towns.)  Graduals from Eastern Europe at this period are very rare.  Size: 24 x 16 1/8 inches.
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