What should be the last of the stamps with king Frederik IX,
first issued in 1948, were issued in 1955. The stamp was the 24th.
The Postal Service had a rather large remainder of old values,
and they were surcharged in 1955. The old 6 and 7 Øre stamps were
changed to be 5 Øre stamps, and the old red 20 and 25 Øre stamps
were changed to value used for a normal letter - 30 Øre.
Commerative Stamps
The first aeroplane in Europe was made by a Dane, J.C.H.
Ellehammer. The stamps is showing mr. Ellehammer in his plane,
flying for the 1st time in 1906.
In October 1956 a series with 5 swans, symbolizing the Scandinavian
countries, were issued at the same time in Denmark, Norway, Sweden,
Iceland, and Finland (Suomi). The stamps are printed at the Swedish
postal services.