A drawing of a Jussipaita (transl. Jussi sweater); a traditional sweater form the Finnish region of Southern Ostrobothnia. The original designer is not known. It has been speculated that the design appeared first time in the film Pohjalaisia year 1925 and it was a modification of a traditional sweater from Southern Ostrobothnia (see this link for more information (in finnish)). The Jussipaita-pattern should thus be public domain.
Own work
Cryonic07