I think (?) that it is an older example of Iisakki Jarvenpaa from the 50's or so. Although the same pattern/style was used by several other puukko makers: Reino Kankaanpaa, Eino Lahdensuo, Juho or Kustaa Lammi, Luomanen & Kumpp among others. The style was very popular (and still is) in the Kauhava and Lapua regions of Finland. Whoever the maker is, he is a master craftsman. The intarsia work (handle inlay) is outstanding. Great video. Thanks.
Rich