![SWEDEN - 1920, Blue Stamp SWEDEN - 1920, Blue Stamp](https://mynation.net/stamps/files/2020/05/189.jpg)
The stamps of this series were put into circulation in 1920, and they were printed throughout that year. Apart from the historical value of this lot, an experienced collector with a good eye might notice how differently the design is centered. This peculiarity made the stamp not only rare but also valuable.
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