In past some courtiers decided to issue special coins for their possessions, such as Denmark for its Norway province of the Great Britain realm for its many many islands.
From one side it looks practical and gives political value to the territory's national perception: this step rises the position of the territory higher in eyes of peoples in the territory and in the whole world.
From the other side it gives responsibility to organize healthy circulation.
In fact for a long time territories of both examples given above experienced lack of coins. The government knew about it and did nothing for years. The mintages were so small, that population used and used the same coins again and again. It brought to phenomenon, that most of coins became very well worn, but still circulated! As the result a common condition of coins in a collection from such territories of tough times is much more worn, than from independent countries.


Here is an example of Cyprus coinage under British rule. It was organized immediately when the island was gifted by Turkey to the Crown for its help in war with Russian Empire. It proudly bears name of possession CYPRUS on the Rev. For more than 20 years the possession did not see a silver coin in circulation! Three denominations ¼ (above), ½ and 1 piastre had to satisfy needs of the island. And the total mintage less than 1000000 each during whole period of the emission was too small to keep circulation in normal watercourse.