Hello gents, i don't know if this correct place. But i don't have other place to ask this. Along with some of these military related theme stamps including Indonesian japanese occupation stamp including it's Indonesian Independence Revolution version, 1945 battle of Surabaya, 1945 Australia peace stamp and 1949 chinese stamps including PLAs.

I got this Sun Yat Sen little poster, and behind the paper there's some kanji writing. Is there anyone knew the meaning about that writing? And if it's possible, is anyone can determine how old is this poster?
Thank you in advance

PS: If this thread is not appropriate, for the mod please feel free to delete this thread.