Hand illuminated page on very thin vellum...lamb skin
Inherited along with several other manuscripts, some very large. This is about 5x7. The size should be discernible from the ink pen included in the first photograph.
Thank you for contacting Mearto with your appraisal inquiry. So that I may best assist you, can you please upload a few better images of the illustration of the praying monk and some details of the surface of the letters.
With kind regards,