All the brass parts are cast rather poorly and look like they've been artificially aged. The casting lines have been ground down and then hammered over so they're nearly invisible, so somebody put some effort into making it look authentic. I'm sure it's not "real", but the blade intrigued me.
http://www.fightingarts.com/reading/article.php?id=128
I found this page describing the different kinds of Chinese metal working. I think this blade looks more like the twist core example than the sanmei one. Maybe it's some kind of simulated or "fake" twist core. I can't imagine it's the real deal.