Hi Resource, Possibly worth around 200Euro. However it may still be too common for a collector to give you that money.
Best bet is to hold a charity auction and Auction it that way. if you have people with a few quid these usually go for more than they are actually worth.
So just state that it is worth at least 200Euro and hopefully you'll get it.
P.S.I will move this post to the collectors Corner later just so as you know where it will be