Mystery stains on Grandmas quilt
I have a quilt my Grandmother made that has been in storage for probably 30-40 years. There are mystery brown stains on it: looks like someone had a nosebleed, but it could be food or something that turns brown with age. There are several shades of brown so it could be several things. I have vague memories of her making this when I was a child: I think she finished it, someone promptly spilled on it, then she died and my mother put it away "safely" not realized it was stained. It would date probably from the late 1950Âs or early 60Âs
It is not a pieced quilt: the surface is all one piece of off-white cotton. It is heavily embroidered with dark indigo blue cross-stitching and white hand quilting. ItÂs all blue and white like Delft porcelain. The back is the same fabric. I donÂt know what it is filled with but this was before polyester batting so it is either cotton batting or some plain cloth. It is thin, not puffy. I donÂt know what the embroidery thread is but probably some kind of polished cotton: I know she normally bought regular embroidery thread.
I donÂt think it has ever been washed: it still has the marks of the pattern on the cloth under the cross-stitching.
I have spot treatments for laundry and for carpet stains but since some of the stains go over the embroidery, IÂm afraid those will bleach the blue color. Also the base fabric is off white, not white-white.
Any suggestions about what is likely to be safe for this? Thanks!