I hope that you do not mind, but I have cropped your photo to show the hilt and the numbers a little better. The biggest problem I see in trying to identify where this was made is that anyone could have seen this style of hilt on another piece, liked it and had a copy cast and mounted to a blade they already had. Posting a few close-ups that show all of the stampings on the hilt might also be of help in trying to identify the origin of this piece.
Best,
Robert