I dont see the point in this thread as there is so many different old weapons from hundreds of cultures.
My favourites are Short swords (So I chose daggers). Quick, efficient, Didnt break, Easy to learn, difficult to master and the Spartans and the Romans used them. Two of the best soldiers ever in history.
My second favourite are Black Eggs used by Ninjas of old. I cant remember exactly what they contain but you could throw them in the eyes of your opponent pretty much leaving them wide open too attack.