Year of, month of, week of, day of

You know them, all kind of of's. Year of the Children, or day, Year of the Rooster, Labourday, al the day's and years of our life do have a name. Even we have stamps for remembering and sometimes to mail letters....Here a very nice MiniSheet of the year of the pig. Look carefully, only one stamp in it, or is the whole sheet a stamp too?. As you see there is also a Dutch cancellation/printing on the stamp/envelop. Needed to find it's way to my house.