It's unclear what you mean by seal.
If you want to keep old postage stamps, you should buy a proper book to store them in, use hinges (some like them, some don't) or sleeves to protect them.
You can't regum the stamp if that is what you mean. Once the gum (glue on the back) is gone, it's gone. You are not allowed to regum it.
The cost of postal stamps are $0.28
In the U.S. Postal Stamps are 42 cents each
How much is postage stamps in 2012
What stamps? First postal stamps were used in 1840.
Stamps that are currently being used are still good into the new year . Buy the forever stamp that is honored even when the postal rate goes up .
One can find pictures of wax seal stamps online in Google images, Bing images, or Yahoo images. In addition, one can find pictures of wax seal stamps in wax seal stamps selling stores online.
I really don't think they're all that necessary if you're referring to postal stamps or ink stamps. With regards to postal stamps - most people throw out the envelope and keep the invitation.
You can find books on Historic stamps of America 1978 Postal commemorative society on en.allexperts.com/q/Stamps-Philately-1610/2009/2/books-stamps-great-grandfather.htm
You can find 1978 Commemorative stamps of America on about.usps.com/who-we-are/postal-history/stamps-postcards.htm
Who Knew - 2010 Postal Stamps 2-59 was released on: USA: 22 October 2010
Postal stamps are those stamps created to indicate payment for mailing services such as delivery of letters and packages. They are issued by the appropriate agency authroized to do so by the government of a country. There are private post stamps, designed to indicate payment to a private company that does deliveries, such as the Pony Express or UPS. There are semi-postal stamps, stamps sold with a surcharge to raise money for certain needs, such as wars and charities, as well as pay the postage rates.
Semi-postal stamps are those sold at more than their postal value, with the additional money going to the specified charity. The U.S. Postal Service has issued three semi-postal stamps and all of them are still valid as postage. The Stop Family Violence stamp was retired on December 31, 2006 and its postal value is fixed at 39¢.