I need to know the differences between sizes of Pillow/Messenger bags. I've seen two different heat stamps with the one-line authenticity labels, so I'm assuming the difference is between the large and small size. I have a small Pillow with the separate heat stamp and have seen others with it built-in to the zipper area, and the measurements seem commensurate. Does anybody have a large Pillow and can let me know what your heat stamp looks like? I've attached two photos from the same era Pillow so you can see what I'm talking about. Perhaps BV decided to do the heat stamp differently at some point - can anyone advise? Thanks in advance.