Here is a
link to a mystery sword of mine along with some helpful comments from forum members. The pommel of your sword would have me thinking Migration Period, but the fuller really points to later, even slightly younger than the Viking Age. Though superficially different, please note that both swords employ an iron crossguard and also have hollow bronze pommels fixed in place by the peened tang.
Obviously there remain groups of swords that lie outside of the well publicized classifications and stripped of provenance in the antiques market, these present challenges to identification. In any case you have what appears to be a nice old sword.