Sorry Iain but I see no scales here just a simple through tang with washer and peened end, the spacer washers on the top and bottom of the hilt could be coconut shell, or leather as i suspect, the 2 hilt pins - rivets are certainly not looking like an Asian fix as you noted, personally I see a tourist blade and scabbard with a new western made hilt, I say this because a friend has one just like it with a wooden hilt that has carved men either side which I handled recently.
Much the same as the one here shown in a previous post by Wayne.
Snody.