One more little and valid observation, the hilt of your knife is shorter than the original early tourist ones that I showed here in attached the pic with identical blade and scabbard, although your scabbard is minus its top curving carved section, so any re hilt with slightly shorter hilt would allow for a washer and peening over of the end of the tang, just an observation but a valid one for sure.
And one question, what are the spacer washers on the top and bottom ends of the hilt made from ??, can you tell which material has been used. regards
Snody.