Hanging in a local antique mall is this piece of shattered history. I’m just guessing that it was once a piece of a shawl, as that is what it appears to be. At any rate, it is a really good lesson on why textiles should not come into contact with brown paper and cardboard. Silks from the 1920s and earlier are often unstable due to metals and salts that were added to them in order to give them some heft.
Putting a textile right next to paper is just asking for trouble. Most paper, especially older paper, has a very high acid content due to lignin in the wood pulp. Those same acids remain in the paper, and will work on anything that comes into long term contact with it.
I didn’t check the price on this piece, but it really does amaze me that someone even considered this to be salable. It will, of course, continue to deteriorate.