And an expert on shawls did not spot it but you did.
What expert on shawls was called in to conduct this analysis? Besides, it wasn't me who said it might have been a table runner; others have suggested that and, having seen it close up and in photographs, I can see where they're coming from.
As if it matters if it was a shawl. It had blood on it and was said to be a ripper victims.
By the family of a police officer who, as far as we know, didn't attend the scene of the crime, and who wasn't even a member of the City Constabulary. Furthermore no shawl or anything like it was ever mentioned as being in Eddowes' possession, despite detailed inventories being preserved on the record.
According to Russell Edwards, Alan McCormick told him that Sotheby's looked at the "shawl" and decided it was early 20th century.
Remember that the fabric owned by the Simpson family was in two pieces that when put together measure 8 feet long and two feet wide. I also believe origin of calling it a shawl began with them. Here's the backing of the frame they kept it in and I think that's Amos Simpson's great-grand nephew David M. Hayes' signature.