This is an elegant Fukuro obi
with flower like Tsujigahana
style on 'michinaga-dori'(placed curve or polygonal line as the pattern bonded with some different colors and designs) pattern, which is dyed with shibori(tie-dye) technique.
Textile is exquisite Tsumugi
silk with nubby touch.
Discoloration can be seen on the weft and some of them might be molds(2nd photo below the drawing image), but it does not have any smell.
As for other damages, please refer to the photos and the sheet.
It's still wearable enough with very good condition if you don't mind those small flaws.
Please enjoy this graceful piece with its classical design.