Three top-flight stones on offer. One could consider all of these finishers for damn sure, but you could have the Ohira as a sort of second-to-last in a fine sharpening progression. Easy to jump to from a mid-grit natural like an Aizu. All three are a polisher's dream and quite large.
One is a lovely Ohira Ocher Suita
Then an ALL-TIME Okudo Renge Suita. Gorgeous purples on that one.
And lastly a massive Nakayama Iromono.
All three are perfectly sealed. The original seller even built an epoxy base to make the Nakayama even. Tried to show that in pics.
Okudo: 1250
Ohira: 850
Nakayama: 700
To make my life easy, if you're flush and looking for some end-game, $2500 gets you all three shipped CONUS.