BChou, the Malla that HI has been making is a usable khuk, as are all of their product line. Yours could be a showpiece if that is what you would want to make it and keep it as such. If it was made by one of the kamis that aren't around any more, it could possibly be considered "rare". Basically, if you want to use it, it is a user. If you want to mount it on a wall or put it under glass, then it would be a showpiece. Whatever you do with it, it is a fine khukuri and I for one am glad that it was found and is reproduced by HI.
Since I don't recognize your handle I'd like to say Welcome. You can access the Search function for this Forum, the Cantina and the Archives and possibly get more info on the Malla. I know that you'll find lots of personal opinions on this model.
Rick