I'm 99% sure the leatherworking requirement on this is 30. I crafted over a dozen of them and my leatherworking went from 28 to 30, then stopped there.
Pretty good great katana. Goes for about 20K on my server last time I checked, and I plan on getting it since it comes after a long chain of 100K great katanas, and call me cheap but I'd rather wait 12lvls and buy this sword then buy a sword for 100K (>.<) a lot of people buy this thing to.