I found this while doing some research and thought that the pouch folks might like it. Its looks like an example of the brick stitch pouches complete with fancy tassels. It seems that the pouch patterns are a mixture of stitches and emtpy canvas. The book "Der Kunst- und Reliquienschatz des Kölner Domes (1870)" can be found here. The figure is on pdf page 267 or if you're browsing the "flip book" its page 159 of the last section.
I'm using Google translate for the information since the book is in German, so my understanding of the passage is vague. The piece is listed as a relics embroidery bag in silk embroidery on canvas. The colors are listed as red, white, and blue silks. The pouch is from the first half of the 14th century and seems to be considered a representative piece of a larger collection.