1 October 1983 had been declared World Music Day by UNESCO International Music Council. The Swedish Post Office issued a minimum sheet with five stamps entitled Music i Sverige. The motifs feature music in Sweden for the last 100 years. The stamps were for sale from 1 October untill 31 December 1983.
One of the stamps featured an engraved version of a picture of ABBA, taken by Anders Hanser.
This is what the Swedish Post Office said about ABBA:
Whether Sweden's most successful music machine, ABBA, can also be regarded as genuinely Swedish, is perhaps a question asked too soon, but that it has a very special profile in the enormous world of pop music, no one can deny. A certain cool, Nordic tone is one of the finest of the distinguishing marks of those four people, together with their devastating professionalism. Even if the quartet is disbanded and the ABBAs go their several ways, they have made a permanent place for themselves in Swedish musical history.
I have three pictures on these pages: a picture of the first day cover, a picture of the stamp itself and a picture of the complete set of five stamps.