yes
Stamps are always and forever worth the denomination printed on the stamp. If you need a one-cent stamp to complete postage, and you have a one-cent stamp from 1933 - it is perfectly legal. As to what individual stamps are worth to stamp collectors - that is a completely different question.
Yes. that is their purpose, to still be valid.
A three cent stamp will be good forever for US postage. Every US stamp issued since 1861 is valid for postage.
One sheet of the 24 cent airmail stamp was printed with the airplane printed up-side-down and sold before the error was discovered. This is undoubted the most famous error stamp in US postal history.
No you don't, that's the whole purpose of the Forever stamps, they are valid for one ounce of First Class Postage at any rate.
It depends on the weight of the package or envelope. Letters weighing one ounce or less require a 49 cent stamp called a "forever" stamp.
A Queen Victoria 2 cent stamp can be worth up to $500 Canadian if it was printed in a specific time period.
There is a "Forever" stamp that commemorates the Islamic holidays Eid al-Fitr and Eid al-Adha. It can be purchased for 46 cents, though a new design has not been announced.
Yes. That's why it's called a "forever stamp". It will remain sufficient postage for a first-class letter indefinitely regardless of future postage increases.
One, plus a 21-cent extra-ounce stamp.
US stamps come in different denominations, but if you just asked for a stamp you would probably get a 44 -cent stamp which pays postage on a letter of up to one ounce. The "forever" stamps currently are considered to be 44-cent denomination.
Scott #1354. This stamp was issued in 1968. It was part of a ten stamp set printed on single sheets. A mint copy can be purchased online for $1. A used copy is 65 cents.