The marriage of the Virgin from the Visconti Hours

When I was a child my mother brought this  book home for me. It was the Visconti Hours, an illustrated book of prayers painted for ruler of Milan, Gian Galeazzo Visconti in the 14th century. I spent many hours looking at the pages. The book was published in 1972 and my copy is in pretty good shape except for a cracked spine.