In the U.S. from 8 January 2006 through 13 May 2007.
On January 8 of 2006 the cost for a first class stamp was 39 cents. That covered the first ounce of mail. That rate was in effect until May 14 2007 when it went to 41 cents.
More than likely, the post office will stamp "Insufficient Postage" on it and return it to you. Not only will you lose out on your 39-cent stamp, but you will also lose the time of delivery. It would be better to buy a 2-cent stamp and add it to the envelope than to lose 39 cents and delivery time.
A three cent stamp will be good forever for US postage. Every US stamp issued since 1861 is valid for postage.
42 cent
3 cent
5 cents.
It was George Washington on the 10 cent stamp in 1847.
1 cent
In the US a five cent stamp can be used toward making up the postage rate necessary.
They cost 39 pence.
"A " stamps are the same as 15-cent stamps.
1 cent
1985 was the year that first class stamps went to 22 cents .