Q9 20/20 Dead Staff

I figure this could be interesting from a collector's perspective, if anyone is interested shoot your price.

Since there seems to be interest I wanna do this correctly. I'm new here and I don't want to offend someone, how do these "auctions" usually work? Do I need to set a time window for the auction so that potential buyers know when it ends, or I just leave it up and sell it whenever?