The De Bar Hours (W.93), likely created as a wedding gift for a young bride in early 14th century France, is an unusual manuscript with lacy rosettes cut into every one of its parchment margins. Its early date places it many centuries before other known “lace” books, so it has long been assumed that the cutting of the pages could not be original, but was just an 18th-century alteration meant to beautify the book. Join curator Lynley Herbert and conservator Abigail Quandt as they reveal how they proved that the cutting was original to the manuscript’s original creation ca. 1310, a fact that could make it the earliest known book of its kind.