This is a refined Tsumugi Nagoya obi
with thunder and 'Karabana' (imaginary flower in China) on vibrant 'kiredori'(overlapping fabric scraps) design, which is woven.
Textile is exquisite Tsumugi
silk and has soft, light and nubby touch.
The stains on otaiko(square bow) (A) will appear when tied.
Though indicated as stain, it is only reflecting the color thread of the wrong side.
(refer to the 4th flaws photo)
It has some other flaws such as slight discoloration and folding lines.
For the details, please refer to the photos and the sheet.
It's still wearable enough with very good condition.
Please enjoy this charming design for your daily use.