United States Postage Rates

[Khandro]

Does an ordinary letter posted in the US to an address in the US, still cost 49cents (up to 1 ounce) and would 20 year old stamps still be valid please?

[ukbod2015]

Quote from a similar US query
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Stamps do not expire. If you have one of the new “Forever Stamps”, then no matter what the rate goes up to, you can use the “forever stamp” by itself. So, if the rate goes up to $.50, and you have a “forever stamp” that you only paid $.41 for, you can still use it by itself (you don’t have to add $.09 worth of stamps to make the postage equal $.50).

Back to your question. As long as they have not been used, in other words, they haven’t been stamped/postmarked by the USPS, then they are good to go. If you have a stamp from the 70s, then you just have to add stamps to make the postage equal at least $.41 if it’s just a normal letter.

But, if they’re cool stamps from the 70s, why would you want to use them? If they are unused, then they might be collectible. Check ebay or something to see if they are worth more than the face value."

[Khandro]

Thanks ukbod; They are a page of 8 red 10 cent U.S. airmail stamps attached in a booklet which originally contained 40. probably 20 to 30 years old. I was going to put them on an envelope for forwarding to a writer by his publisher, probably not really necessary but I thought it polite.