This is a very very common US regular stamp. It really has no market value, except for postage, if unused. Anyone who collects stamps will find he has dozens of them.
Let me explain, at risk of boring you, a little about the stamp market:
Common stamps are usually sold in packets, or collections or stamps, not one at a time, and this
is the way you want to buy them if you are a collector. In these packets, you have no choice as to exactly
what you will get.
For example a packet may be advertised as 500 different US for $5.00 or $400 different US commemoratives
for $7.50.or $50 face value US for $45.
After you have bought a number of packets, you will find that you have duplicates of some stamps but lack other,
equally common stamps. If you know other collectors, you can make trades. But if you can not get all
the stamps you want by trading, or by buying more packets, you can order individual stamps from dealers,
and there is a "Standard Postage Stamp Catalog" which lists typical dealer's prices ( inflated somewhat)
for stamps ordered individually. The minimum price is 20 cents and mint stamps are listed at about twice face
( if that, is over 20 cents).
So, in some sense, every stamp is "worth" 20 cents, but unless you are a retail dealer, you will never be
able to sell your stamp for that much and even a retail dealer does not sell very many common stamps
for that amount.
Dealers buy common stamps as part of large collections and accumulations. When a long time collectors
decides to sell ( or his heirs sell), he usually has ( or leaves) thousands of common stamps as well as his
main collection.Dealers buy the whole thing, but really only pay for the good stamps -- the 20 cents they get
from such are mostly a labor charge for finding the stamp you want.
It is a forever stamp. It is good for the current value of a first class stamp.
The Liberty Bell is pictured on the Forever Stamp. They are worth the current value of a first class stamp, which is 44 cents in 2009. They can only be used for US addresses.
Scott Number 929 pictures the flag raising at Iwo Jima Roosevelt. This 3c stamp was issued in 1945. It has a minimal value used and can be purchased for 70 cents in mint condition.
About 25 cents
No one knows. Don't ask again.
39 cents. This is called the "Lady Liberty and U.S. Flag" stamp. See http://www.usps.com/communications/news/stamps/2006/39/
The Liberty Boys, part of the Sons of Liberty, were the group of Georgians who opposed the Stamp Act. The Stamp Act was passed in 1765.
About 50-100$
3C means 3 times whatever the value of "C". Similary, 5S means 5 times whatever the value of "S" is.
The formation of the Sons of Liberty was a response to the Stamp Act.
This was issued December 6, 2006. It has a face value of 39 cents.
Forever stamps will have the word FOREVER printed on them. If the do not have a value and do not say forever, they have a fixed value.