Ashi Ginga or Sakai Yusuke or Konosuke are the wa lasers that come to mind. Western handle there are others.
3M gold goes up to 800 at least then wet/dry then micro mesh to whatever your OCD level is. Or you could buy a cheap 1" x 30" belt sander and
New owner ought to love it. According to one of his assistants Murray C. really likes Fowler's work.
That is a sweet looking line knife GLWS.
What type of knife? Gyuto? Petty? Funayuki?