Selling old stamps?

Millions and millions of these were issued and they have little collector value. You are better off using them as postage. You need to know what the face value of them is. There should be a letter on them. IF they were bought in 1980, they will be orange with the letter A, good for 15 cents, because the 18 cent B stamp didn't come out until 1981.

These were stamps that were hastily put into use when rates increased, meant to be used until new regular-issue stamps were ready.

Some people get a little over face value selling them in full sheets of 100, but some people also get less than face value. There are tons of them out there. You take your chance trying to sell them, which is why you're better off just using them. Just buy an extra four cents in stamps (1c, 2c and 4c stamps are available at most post office windows) for every three 15 centers you use, to total the current 49 cent First Class rate for a letter.

USPS knows what these stamps are. I don't see a lot of people using them but they do still get used.

Flatter a Philatelist...He may buy them.