Viking out, they used quite different hilt parts, and preferred much shorter hilts. Especially the pommel seems out of place for anything viking.
Roman out as well as far as I know, as they used more rounded hilts, with almost-spherical wooden pommels.
Celtic... I'm not sure, they never used much armour so I don't know much about them
, but I think they almost always used antropomorphic hilts.
The quillon seems VERY indian to me.
Hm, not much info, sorry...
Oh, almost forgot: that "tongue" part of the quillon is quite out of western europe as well... I've never seen anything like this on western swords except the claymore, but that would've been recognised by a glance.
