large old sword with strange hilt ( crescent shape guard ?)

[ariel]

The handle looks pretty new and decorative.
The blade… First, it was shortened likely to mask its broken tip ( the fuller runs into it). But the presence of the yelman looks almost “indian” or “afghani”. There may be some decorations on the blade, although it may be just patina.

Overall, it seems to be a composition of unrelated parts.