This is a Yokoso Oshima Tsumugi
Kimono with small 'kikko'(tortoise shell) pattern, which is woven with weft ikat technique (yokoso).
Textile is silk, and it has crisp touch.
It has wear on collar and fine stains as shown on photos.
There are light but rather large stains on the back and the left front panel.
Smudged fray is along the bottom of the Hakkake 'lower lining'.
Please see photos for details.
If you do not mind the flaws mentioned, it can continue to be worn.