Yeah that's a shame Gav..... Easily done though...
In truth the nearest blade on a quick search, I can find is this Burmese one...
Although yours is more advanced in fullereing, many similarities still I think?
From sold Items on your site...
original past sales link...
linky
Although I have seen similar fullering on Tibetan, Nepali & also Balkan blades....
But riveted bolster that looks integral but isn't, Ive only seen NWF & surrounding area? As best I can currently recall..
spiral