【Authentic Japanese Painting】By Rin Unho - Twelve Months Shikishi

This is a Japanese painting by Lin Unho, a Japanese painter from Gifu Prefecture who was active from the Meiji to Showa periods and is the grandfather of cram school lecturer Shu Hayashi.
The painting depicts the scenery of one year, from January to December, on 12 shikishi (colored paper).
My family seems to have had a connection with Lin Unho in the past due to my great-grandfather's calligraphy, and this is one of the pieces we have in our collection.

The painting is beautiful with no fading, but unfortunately, due to being stored in a wooden box in the closet for many years, there are numerous stains as seen in the 5th image.
It may be possible to clean it if you are skilled in art restoration or stain removal for antique art, but it is uncertain whether cleaning is actually possible.
There appear to be no damages such as insect damage or tears.
It is at least 60 years old, and considering the aforementioned stains, please purchase with the understanding of these points and strict adherence to 3N (No Claim, No Return, No Cancellation).