Leaf on vellum from a manuscript Book of Hours.

A very nice vellum leaf of a French Book of Hours*, written around 1450 in Paris [or Rouen ?]. The first thing we observe is the elaborate pen work decoration in red, blue, black and gold, especially around the initial.
*Book of Hours - A very popular type of text during the Middle Ages used for private devotions. It contains a calendar as well as psalms, prayers, hymns and biblical readings for recitation during the eight canonical hours of the day, known as the Hours of the Virgin.