They are still valid as 20 cents worth of postage. You would have to add additional stamps to the envelope to meet the correct rate.
All Newfoundland stamps are valid for postal use at their face value because they have not been demonetized (their use denied) by Canada.
They are still valid as postage, however, they are only worth 20 cents, which means you would need two of them plus another 4 cents to mail a letter.
The F series stamps were issued in 1991. The postage stamp has a face value of 29 cents.
In the US postage stamps are always valid. You do still have to have enough to cover the current postage cost. And Forever stamps are always valid for one ounce of first class mail, regardless of the actual cost.
I have a cigar box full of Chesterfield Stamps. Are still valid, or are they worth something? My guess is they are at least 20 years old.
Yes, they are still valid for postage at their purchase value, 33 cents.
All stamps issued by the government since 1861 are still valid for postage.
Yes, they are still valid, however, they are valid for their face value. You can find that at the USPS web site under non-denominated postage.
Yes it is still valid for 1 cent worth of postage on US mail for a domestic location.
Yes, first-class stamps are always valid for mailing letters within the same country, regardless of when they were purchased. However, the cost of postage may increase over time, so additional stamps may be required if the postage rate has gone up since the stamps were purchased.
All stamps issued by the US since 1864 are still valid for postage at their face value.