about two gladiator daggers pommels

[marcos]

I'm talking in these days with a friend of mine about two famous galdiator dagger handles. I guess you already know them , they were sold on
(auction houses : edited by moderator) auctions in the past years.

first pic


second pic


The problem is: everyone ((auction houses : edited by moderator) and Axell Guttmann) were saying those come from gladiator swords , and I have to believe because are unquestionably three weighty sources , but ..... how is possible to have in your hand a similar grip, with in the middle that human-head pommel ?
It is quite impossible, I think , to fight with a similar grip .

But now, why they are saying so; where is the mistake ?