SAINT AGATHA, historiated initial "G", on a leaf from an ILLUMINATED MANUSCRIPT CHOIR BOOK ON VELLUM

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SAINT AGATHA, historiated initial "G", on a leaf from an ILLUMINATED MANUSCRIPT CHOIR BOOK ON VELLUM
[South Eastern Germany or Austria, circa 1450]
Upper portion of a leaf, 325x445mm, initial 145x150mm, yellow with foliate pattern, on burnished gold ground with leafy pattern, purple and lilac border, with coloured leafy and floral extensions. St. Agatha, crowned, is standing in a blue robe, holding in one hand a martyr's palm branch and in the other a dish bearing two female breasts, on orange patterned ground. Leaf numbered at head lxii. Text in black ink in a large gothic textura. 4 lines of music in 'hufnagel' notation on red four-line staves. 4 lines of music on verso, with two large calligraphic initials.
The miniature introduces the Response for the Nocturn at Vespers on the feast of St.Agatha (28 January) 'Gaudeamus omnes in domino diem'