Need help sourcing out Train parts
 

Hey all

For any railfan living in Japan, i need some help locating the direction banner/display off a retired yamanote train. If you have one or know of a plac auctioning one out, I will appreciate any information you can share

It doesn't have to be off a retired train, if you can find me a replica LED sign, i will take that too

Thanks

It doesn't understand well....orz

205系 側面方向幕 回転(山手線用・巻取り器は201系試作車のもの) ‐ ニコニコ動画(原宿)
http://sabo2006.web.fc2.com/SABO-JR-E-E231yamanote.html

Is it this?