Self-adhesive Stamps
In recent years, the use of self-adhesive stamps has become widespread. The first use was by Sierra Leone in 1964, and the United States tried it on a 1974 Christmas stamp, although the experiment was judged a failure and not repeated for many years. Traditional gums remain in use, although differentiated by calling them water-activated. All Israeli postage stamps feature a water-activated adhesive that is certified Kosher.
Read more about this topic: Postage Stamp Gum
Famous quotes containing the word stamps:
“Even in harmonious families there is this double life: the group life, which is the one we can observe in our neighbour’s household, and, underneath, another—secret and passionate and intense—which is the real life that stamps the faces and gives character to the voices of our friends. Always in his mind each member of these social units is escaping, running away, trying to break the net which circumstances and his own affections have woven about him.”
—Willa Cather (1873–1947)