It will depend on the specific stamp issue. It could be minimal, worth 15 cents postage for each stamp. They may be 50 or 100 stamps to a sheet. There are some very early 15 cent stamps that could be worth many dollars each. Consult a good stamp catalog to identify the stamp and its value.
That would be Scott Number US 3561-3610. A complete sheet has a catalog value of $36.75
US postage stamps do not expire -- they are always worth face value as postage.
Stamps are always and forever worth the denomination printed on the stamp. If you need a one-cent stamp to complete postage, and you have a one-cent stamp from 1933 - it is perfectly legal. As to what individual stamps are worth to stamp collectors - that is a completely different question.
Not necessarily. Most postage stamps that have been used are worth only pennies.Unused stamps are still worth their face value. A unused 29 cent stamp is still worth 29 cents.What makes a postage stamp valuable depends on the following factors:Age: Older stamps are ususally worth more than newer stamps.Certain categories: Some stamps are worth more because of their popularity. As an example; baseball or movie star stamps are worth more.Mistakes: Stamps that have a mistake are ususally worth a lot more.Combination of Age & a Mistake stamp are very valuable.
A single page of a book of postage stamps is referred to as a pane. A booklet pane may include slogan stamps (Use Zip Code) that are there. Specific panes are worth more than others and are listed separately in specialty catalogs.
The minimum they are worth is their face value. They are still valid postage. A quick look on eBay found one could purchase a full sheet (32) for $4.99, plus $4 shipping. http://cgi.eBay.com/U-S-Postage-Full-Sheet-6-cent-Stamps-Dwight-Eisenhower_W0QQitemZ260182274428QQihZ016QQcategoryZ265QQrdZ1QQssPageNameZWD1VQQ_trksidZp1638.m118.l1247QQcmdZViewItem
Yes you can and they are worth 33 cents as postage.
Face value - use for postage.
Qne recently sold on eBay for $9.17 plus postage. of course the seller had to pay the auction fees. A dealer offers one for $12.48 plus postage for immediate sale.
Stamps like that were issued in 2005 and 2006 and were worth 39 cents each.
Postage stamps that are worth 32 cents can still be used but they must be combined with other stamps to meet the current postage rate. In January of 2014 the current postage rate was 49 cents for a letter that weighs one once of less.
The ones with a flag are worth 2 cents. Additional postage must be added to make the current rate. They are good for US addresses only.