This is a Tsukesage
Kimono with alluring 'kikko'(tortoise shell) tsunagi pattern, which is dyed.
Fine embroidery work is added on parts of the pattern.
Textile is silk, and it has soft touch.
It has slight wear on collar and has small stains. as shown on photo C.
There are also blackish stains on the back, at about 80cm(31.2in) and 100cm(39in) from the bottom, but they may hide when worn with an obi, depending on your height.
Its lining is slightly discolored due to the age. (sorry no photos)
If you do not mind the small flaws mentioned, it can continue to be worn.