[ryuurui]

I really do not think any Japanese would write "27" during WWII, so the note must have ended up in the jacket somehow in later years.
It looks like someone is about to renovate the house, and its a shopping list for the paint and other stuff.

I think its the site issue and Siokan has typed it in, yet it came out as ?, but i think that the jacket size indicator is 小號　 - small size.

the last line of that note is a mystery, though the top character's right hand side seems to have same radical as 杯 (but the left side escapes me), and the third character from the top could be be 別　（別々 - possibly, but i doubt it, as it is rather unnatural way of writing 々), i.e. 別々八坪 . Second from the top is unreadable to me.

Long shot, but the top character in the third row looks like 玉 (bulb). So : bulb and paint for 五坪