Pure Silk Obiage, Fully Gathered, Men's, Black and White, Heikoband

Found while organizing belongings at my parents' home. I don't know when it was purchased, but I believe it's an antique. It's a very fine item and was carefully stored, so I hope someone can make good use of it... (*^^*)
It was reportedly used only once.

This is an amateur inspection, but I don't think there are any noticeable major damages, though there are some areas that look like fraying.
There is a slight smell of the closet.
There are no smokers or pets in the household.
The box has fading and deterioration due to long-term storage.

I don't know the details, so please check the photos. I will answer any questions I can within my knowledge.

Japanese clothing
For men
All-shibori (tie-dye)

Approximately 300cm