In the US the official First Class rate was 15 cents beginning May 29, 1978. It stayed at that rate until it went to 18 cents in March of 1981. Any additional ounces were 13 cents.
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.
15 cents.
Postage to Spain from the US is 98 cents in 2010.
These are 15-cent stamps -- still good for 15 cents postage.
The first class rate was 32 cents that year. A post card was 20 cents.
It varies from year to year for the cost of postage stamps. Right now in 2010, it cost around 44 cents for stamps..
The cost was 15 cents in 1980. That covered the first ounce of weight. It was raised to 18 cents in March of 1981.
44 cents
{| |- | Scott Number 1735. These are the first class stamps. They have a face value of 15 cents. They are still valid for postage within the US for 15 cents. |}
You can purchase 7 cents stamps at the post office if they have them in stock. If you are looking for 2007 stamps, they can be purchased through dealers. The USPS sometimes has year sets available as well.
Stamps in the US in 2006 started off the year at 37 cents. On January 8th they went up to 39 cents where they stayed for the rest of the year. The next year they went to 41 cents in May.
A= 15 cents B= 18 Cents C= 20 cents D= 22 cents E= 25 cents F= 29 cents G= 32 cents H= 33 cents