On the back we see the 4 staves of the music and from the distance between the lines we may assume that the leaf must have been quite large. A very fine leaf from a Book of Hours, carried with her on her daily outings, by a prosperous lady in Flanders, in the 15th century. It must have been a very small booklet, so it could be carried in a bag or, wrapped in a piece of cloth, in her hand. Around the D we find gold leaf and in the margins is pen work with flowers and leaves. There are 3 initials of two lines and 1 of one line in gold, red and blue.
Condition is good.
The picture is surrounded by an architectural border in liquid gold. There are also many initials in red, blue and liquid gold. Domine ad adiuvandum me festina. Assumpta est maria. Lord, hasten to help me.