Here’s an image of the dorsal view, at the level of those heavy bloodstains under the small of the back. Is that stitching I see? (Click on the picture to enlarge, then look at the fish-shaped stain just right of centre, then note the odd break in the pattern that runs across the entire width of photograph). I have just put that question to Mario Latendresse on Dan Porter’s site, and will now give him a link to this posting
NB: once one knows where to look (Picture 3), it is actually Picture 2 that is best to see the extent of the “stitching”, although a double click on the picture is needed for maximum enlargement. “Stitching” is almost certainly a misnomer, since the vertical threads appear to be continuous with the immediately adjacent diagonal ribs of the herringbone weave, above and below.
Update: 21:50 UK time, 17 June.
Here’s Mario’s prompt response to my enquiry
and my reply: