Possible Sarissa parts from private collection?

While looking for a new spearhead for my planned dory, I stumbled across this lot on the ancient art traders site Hixenbaugh.

Might this be from a Sarissa according to Prof. Andronikos' theory? In any case it is an amazingly preserved find - provided that it is authentic, of course. Make sure to check out their whole Greek collection, there are some great pictures of fascinating Items in there. I can only imagine what undiscovered treasures slumber in private collections out there.