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:
“What is the worst of woes that wait on age?
What stamps the wrinkle deeper on the brow?
To view each loved one blotted from life’s page,
And be alone on earth, as I am now.”
—George Gordon Noel Byron (1788–1824)