This is a Fukuro obi
with 'kiribame'(patchwork) of 'kiku'(chrysanthemum) motif, which is nicely and thickly embroidered.
Textile is silk, and it has soft touch.
Stain shown on fifth photo below the drawing image is an uneven spot of weaving.
There are also several uneven spots of weaving on Maegara, but they are not disturbing.
Some blackish stains on Maegara should not be disturbing when tied. (sorry no photos)
It has some other flaws as shown on photos.
Please see photos for details.
Although it has some flaws as mentioned, it still is a very charming item to wear!