Little wavy dagger, please help

[migueldiaz]

Nos. 1 & 12 of Krieger's Plate 13 may be related:

"Plate 13 -- Hand weapons for cutting, piercing, and stabbing: Knives and daggers. No. 1. Dagger; triangular sectioned, curved, and pointed blade; single cutting edge; carved wood handle. Quinapundar, Samar Island. 2. Dagger "bala-rao"; hastate shape double-edged blade; handle provided with a peculiar finger-fitting grip consisting of extended tang and two horns; silver ferrule at center. Chief defense weapon of the Mandayan, southeastern Mindanao. 3. Woman's knife. Blade curved, designed for striking a slanting blow. Bagobo, southeastern Mindanao. 4. Plain dirk-dagger having curved blade, ferruled wooden handle, and circular guard. Moro, Mindanao. 5. Serpentine Malay dagger; grotesque dugong ivory carving on hilt. Collected by the United States exploring expedition, 1838-1842, under Admiral Wilkes. 6. Malay dagger; curved wooden pistol shape hilt; characteristic serpentine figure carving; straight-edged blade. Wilkes exploring expedition. 7. Serpentine kris-dagger; plain horn handle; engraved circular silver guard and ferrule. Moro, Mindanao. 8. Malay dagger; laminated blade; figured and carved handle of wood. Dyak, Pasir River, southeast Borneo. 9. Punal de kris; blade chased on surface section near handle; wood handle set in socketed brass ferrule. Moro, Mindanao. 10. Dagger; curved, double-edged blade; curved plain wood handle. Moro, Mindanao. 11. Dagger having saberlike blade; metal guard provided with volute tips; carved wood handle; blade chased and inlaid with soft metal at back. Moro, Jolo. 12. Dagger; serpentine blade; metal cross guard; spiral fluted grip of Camagon wood. 13. "Insurrecto" sword-dagger chased blade, pointed and double edged; cross guard; horn handle inlaid with shell mosaic; symbolically figured pommel."