This is an old hand forged mezzaluna/ulu style knife made for rolling to chop or scraping. It appears to be hand forged, but I cannot 100% swear to that. There are no markings anywhere on the blade or handle. Blade is roughly 5” 1/2 long and is about 4” 1/2 inches set away from the 5” 1/4 long handle.
Based on style and materials I’d say this is a pre 1900 knife.
Sold as found.