USPS accepts all unused U.S postage stamps since 1861, these stamps are still valid and are valued at whatever price they state, however if no value is shown the the value depends on the particular stamp.
the goverment
This is a 37 cent stamp and can still used for 37 cents postage.
Yes. The USPS requires a stamp, or payment of postage, to transport anything to anywhere.
It is still valid for postage. The exact face value will have to be found on the USPS web site.
The President of the US does not select stamp designs. It is done by a committee of people based on the USPS regulations.
Yes, I believe the Sinatra postage stamp was unveiled in 2008 or so. The USPS has to wait 10 years after the end of a personalities life before giving them this honor.
Yes, they will but you need to put the standard USPS postcard postage rate on the item.
Yes, they are still valid for postage at their purchase value, 33 cents.
$0.46 For one postage stamp at USPS. Most postcards made of paper will only require one postage stamp. Some heavier postcards may need extra postage. To determine how much is required, weigh the postcard before mailing it.
No, only one Forever stamp has been issued. It has a value of 44 cents currently. There is a listing of USPS postage stamps that have been issued without values on their website.
In the United States it would be at the USPS web site. They will deliver them to you through the mail.
You can obtain custom postage from the US Postal Service each time you visit the post office. You can also have the fees for national and international services through the official website of USPS.