This is a Oshima Tsumugi
Kimono with refined asanoha pattern, which is woven.
Textile is silk, and it has soft to the touch.
Collar is hiro-eri (unfolded).
Actual color is dimmer than shown on photos.
It has prominent wear on collar and it is noticeable.
Stains on collar are too small to notice.
White spots of mold are too fine to notice.
It has some other flaws as shown on photos.
Please see photos for details.
If you do not mind the wear on collar mentioned, it can continue to be worn.