Another Medieval Mystery Sword?

[Lee]

Here is what has been another mystery sword to me defying confident classification; I am beginning to suspect that it might also be Couronian.

Overall length is 26.6 inches in the present state with the blade remains being 21.25 inches of that and the weight being 531 grams.

The upper guard and five-lobed pommel are separate hollow bronze castings, now loose. The end of the tang does come through the top of the pommel where the tang has been peened to retain it and there is a dominant central lobe. A 'mismatched' iron lower guard curves towards the blade. If the corrosion is hiding a fuller, then it must be quite shallow and the blade seems to be somewhat lenticular in cross section.

Again, your observations are welcomed!