1. the herringbone selvedge is along one length (that we can see) and only one fringe edge. I think this says that the piece was cut from a length of cloth instead of being woven for the final product that we see. But, I'm not sure as the second pic shows one herringbone length, but the other length looks smooth and unsewn. Maybe just plain weaving on the right? Sorry, having trouble saying what I mean. Just imagine I'm waving my hands around in an approximation of weaving.

2. looks like single worsted based on the threads seen at the damage in the middle

3. is the damage blue dye related? It seems that most of the damage occurs at places where the blue threads all, but that could be a coincidence of placement of a pin or broach.