This is a chijimi (twisted) Tsumugi
kimono with geometric pattern, which is woven.
Its deep color is chic.
Textile is exquisite silk and has quite crisp and nubby touch.
The lapel is bachi-eri(folded lapel).
(A) seems to be molds, although the flaw is indicated as patina on the figure.
Also, discolorations on arm part and stains (B) seem to be molds. (C)
However, there is not other prominent flaw.
Please check detail photos.
It has flaws like this, but it still can be worn!