I’ve recently seen a new growing trend in crafting taskupuukko, small “pocket” puukkos that will work in the same range of duties of folding penknives and EDC folders: opening letters and packages, some food preparation, small wood working etc.
The origin of small and stylish pocket knives in Finland is probably trackable back to the 19th century, while small and rustic wood working knives have been around since the Middle Ages.
During the 19th century these stylish pocket knives were produced both by craftmen and factories and could be both simple and decorated. The more fancy and decorated models were either completely hand crafted by a knifemaker or a goldsmith could be asked to decorate a more basic knife.
Given the great popularity they had there isn’t a single style, but generally speaking, the most common characteristics were and still are a three fingers handle, more rarely a four fingers one, and a blade no longer than 6 cm, with a mostly straight edge and just a slight upsweep close to the tip.