This is a common stamp worth 4 cents in mint NH condition.
Sorry, it was issued in 1989.
You will need to more clearly identify the stamp to determine the value. There are a number of variations. In general, they will have minimal value. Consult a stamp catalog to identify it.
Yes I can. See related link.
I don't see any writing on the flag. The lower right of the stamp has the year in small numbers, but there is nothing on the flag itself.
This is a 37 cent stamp and can still used for 37 cents postage.
This is a very common US regular issue stamp. If you want to buy just one it will probably cost you from 10 to 25 cents at a stamp store for a copy, mint or used. 25-40 cents for a mint copy If you want to order it by mail, you would have to pay postage and handling in addition. Dealers get them as part of larger lots for almost nothing per stamp- 65% face and 1/20 cent if used. The money they would charge you for it is mostly for labor.
29 cents
one dollar
I don't really know it
The ivory colored American flag stamp was issued back on 4/12/2007 and face value is .41.
I just found a listing on ebay saying this series came out in 1973.
There are several different unmarked flag stamps. You need to look at this site http://pe.usps.com/text/qsg300/Q604a.htm and find the picture of the actual stamp you are interested in.