This postcard looks like a piece cut off from knitwear! Stranded knitting is made with different colored yarns so the patterns on work are formed by colors.
This card starts a new series about handicraft techniques. On this card is a modified version of JonSukka, made by grandmother Anja. Jonna Nordström’s JonSukka postcard will be published later this year. If you want to knit socks by using JonSukka design, join to her FB group: Villasukkarakkautta -ohjeet jonsukkiin <3