Don't forget these...
Sakai Takayuki is well respected as the largest knife maker in the Sakai Region. In collaboration with Master Itsuo Doi (son of legendary Keijiro Doi) who is a highly skilled blacksmith, they have produced very distinguishable handmade knives out of Aogami #2 (Blue steel) married with an extremely well finished hammered (tsuchime) kurouchi finish.
From the gorgeous cladding to the personalized maker's mark of Itsuo Doi, the Homura Guren series is unique in enough ways that this is a knife your guests will surely notice as being 'differen't then the rest in your collection. The Homura Guren series are very detailed oriented knives, from the beautiful burned (Shou Sugi Ban) Japanese oak lacquered (Urushi) mono handles to the hazy kasumi polish. They even have accentuated angles where you normally don't see them, like the choil and slightly curved heel. To top it all off, the distal taper and Aogami #2 core steel really make these knives excellent performers and workhorses.
A 150mm petty, also called in some parts of the world a sandwich knife, is the absolute ideal length for any work you need to do putting together a sandwich. Slice open your bread, cut your cherry tomatoes, cut your lettuce, cut your cured meat, you get the drift. If you had to have one petty in your kit, we believe 150mm is the way to go.