Christmas Stamps
A number of nations have issued commemorative stamps at Christmastime. Postal customers will often use these stamps to mail Christmas cards, and they are popular with philatelists.
These stamps are regular postage stamps, unlike Christmas seals, and are valid for postage year-round. They usually go on sale some time between early October and early December, and are printed in considerable quantities.
In 1898 a Canadian stamp was issued to mark the inauguration of the Imperial Penny Postage rate. The stamp features a map of the globe and bears an inscription "XMAS 1898" at the bottom. In 1937, Austria issued two "Christmas greeting stamps" featuring a rose and the signs of the zodiac. In 1939, Brazil issued four semi-postal stamps with designs featuring the three kings and a star of Bethlehem, an angel and child, the Southern Cross and a child, and a mother and child.
Both the US Postal Service and the Royal Mail regularly issue Christmas-themed stamps each year.
Source: wikipedia.org
