Triangular 37x31 mm
Colour: black, violet
Items known:
17.3.1920 via Helsingfors to Rihimäki (FI), black
1.5.1920 Stockholm 5 to Helsingfors (FI), violet
1.5.1920 Letter to Finland. Correct rate 20 öre. Shortpaid 5 öre. Amount due 2x5/0.8=12.5 centimes. Converted to 25 Finish penniä.