I assume the question is about posting an envelope? If so, it is best to go to a Post Office. It will be weighed and the correct postage given. Apart from weight, the size and thickness of the envelope also matters.
A first-class stamp is not the same as a forever stamp. A forever stamp holds the value of a first-class stamp regardless of how often the rate for first-class postage has increased. A first-class stamp only holds its face value.
Enough stamps to equal first class postage of 49 cents, or a Forever stamp. It will also have an address.
The cost of a first class stamp in England is 62p.
The price for a US first class stamp is currently 49 cents. The previous rate for a first class stamp was 46 cents.
There is no set length for the number of pages for a first-class letter. This designation simply guarantees it will be delivered quickly and securely.
Assuming you are talking about a US First Class Stamp: No.
A first class stamp costs 46 cents in the US. Each additional ounce is 20 cents.
The cost of a Royal Mail first class stamp is 60p. The price of a Royal Mail second class stamp is 50p. A first class large letter stamp is priced at 90p. A second class large letter stamp is priced at 69p.
A first class stamp covers up to one ounce of postage.
.60 cents for a first class stamp. .50 cents for a second class stamp.
You can still use the stamp. However, you need to add additional value to the stamp with smaller values to equal the 44 cent cost of mailing a letter.
a first class stamp = 26p