Thanks so much for posting such a detailed view of this old beauty. Can't help much with a date, looks 30's, but maybe there is some older fabric in there too?
Interesting isn't it....many of us could say we have some vintage or at least old fabric in our own stashes - all mixed in with the new/current. I am guessing this is not a new phenomenon, must make it a little trickier for the valuers.
Anyway, look forward to seeing what everyone else thinks. Please let us know if you end up getting an appraisal of some kind, would be really great to see what an experienced valuer would say.