Unframed 13.5x10 mm
Colour: blue
Items known:
13.11.1898 Halsberg to Lowell Mass (US), blue
13.11.1898. Double rate letter to USA. Correct rate 40 öre. Shortpaid 20 öre. Due handstamp indicates amount missing 20 öre/0.80=25 centimes. Doubled and converted to 10 US cents.