talesofthesevenseas:
Thank you for that response. I suppose I should have said in my original post that I've previously done as you suggest in your note and, while interesting, have found both references to be only marginally helpful. Our piece is bigger -- in most cases by quite a lot -- than the pieces that tend to be represented on either eBay or TapestryPalace. Moreover, it seems almost impossible to undertake a meaningful comparison of "age, material, condition ... and workmanship" when looking at pictures on the internet.
I suppose what I need to do is find a local expert who can view this piece directly and render an informed opinion on those aspects of the piece. Unfortunately, despite a diligent effort, I have not been able to locate such an expert here in our community. I was hoping, perhaps, that someone on this forum might be able to provide a specific reference.
Anyway, thanks again for your time and your advice.