This silver plastic weapon is the weapon used on screen by the killer throughout the film. It is the only one that has the "ring" that allows the killer to twirl the weapon on his hand, something he does throughout the film. None of the other weapons that were auctioned, including the main metal one seen on Premiere Props's site and on aother dealer website, has this feature.
Here, you can see the killer twirling the weapon, which can only be accomplished with this ring attached. If you look closely, you can also see the blood on the spear tip, which has almost magically disappeared since first owning it. Here I show comparison photos to how I received it, and its current condition today. The condition remains identical, except the movie blood has discipcated. COA from Premiere Props