Nintendo World Class Service Center Sign

Rowsdow3r

I found this old Nintendo service center sign in my basement, and the interenet gives little result. It has one corner that is bent up a bit. Any idea what it may be worth? 

http://imgur.com/QriVqSM

lojack44

I have the same one! Definitely the rarest in the 3-sign set, the last one I saw on eBay went for around $400 if I'm not mistaken