This is a Fukuro obi
with ethnic "Karabana"(imaginary Chinese flower) and auspicious birds pattern, which is dyed.
There are beautiful 'Raden'(design in mother-of-pearl inlay) applied on the pattern which which emerges in trick of light.
Textile is exquisite soft silk.
There are some flaws such as folding lines, loose stitches(A) on the edges.
Although there is no photo of it, there are slight frays on the edges.
There are noticeable frays along the folding line on 'tesaki'(end of folded part).
There are some other flaws such as mold on the wrong side.
For the details, please refer to the photos and figure.
You need to fix it before you wear it.
It must be a good handcraft material.
Enjoy the exotic design.