The pattern is the difference. Knife image above you can see there is no twist and is the plain kitaeji. Half twist is basically half of the twist pattern on each side or one side with areas of plain kurochi showing depending on the pattern itself. Full twist shows the twist pattern on both side...
DInt know how many of these Kato is making anymore. I feel most of his output is gyutos these days. Pretty sure yanagibas take quite a bit of work to make. He isn’t getting any younger either but still going at it.
Yup in one of the other threads jon confirmed that it took him 6 years to get the latest one. I’m sure his Ashi’s backlog of work to fulfill is plenty long as well. Beautiful knife the hamon really pops.
I didn’t know Ashi still made honyakis. Are there these knives that some knife makers have supposedly stopped or make very seldom (or possible old stock)? Just saw the gesshin one sell out in about 2 minutes. Congrats to the buyer!