Circular 26.5 mm
Colour: unknown
170 öre rate period 1.2.1978-15.6.1980
Most typical use: some air mail items paid at surface rates.
Items known:
Angered ?.6.1979 to Brooklyn, NY (US)
?.6.1979. Air mail letter 5-10 gr to USA. Correct rate 220 öre. Discount stamp incorrectly accepted as 100 öre and regarded as shortpaid 120 öre. Due handstamp indicates deficiency 120 öre and foreign letter rate 170 öre. Amount affixed in USA is incorrect and probably of philatelic nature