Face value for postage remains valid until the government de-values them. In the US, stamps issued since 1865 are still valid for postage.
The value to a collector varies based on supply and demand.
Yes. Postage does not have to paid through individual stamps; as long as the value of all stamps placed on the envelope is enough to cover the cost that envelope carries, any number and value of stamps can be used.
There is no reason to. As long as they add up to the correct amount, they can be used for postage. You can purchase smaller value stamps to add to them to make up the remaining amount.
They are still valid for use as postage as long as they add up to the proper postage. If you check USPS regulations Postage due, special delivery and certified mail stamps are NOT valid as payment for postage.
As long as you have the correct postage you can use 'regular stamps' to post to anywhere in the world. If I want to send a letter and it costs $2:40 then I know I need 4 stamps @60c value each , which is the domestic rate in NZ. Otherwise I go to the Post Office and buy a $2:40 stamp.
Sure, as long as it equals to the proper amount of postage in the end.
Yes. As long as you use more than one. The postage just has to add up to the postage of a letter. Right now an average letter of normal dimensions and weight, costs 45 cents. Postcard rate is 32 cents, so you would need two stamps. Postage stamps are just like money, as long as it adds up to the current rate, even stamps that are 20 years old are valid. But a first class stamp twenty years ago was 24 cents. It's value doesn't change... it is still 24 cents.
Yes as long as the other stamps have not been cancelled
Yes, you can! Post card stamps are just regular postage. As long as the total value adds up to or exceeds the necessary value, they can be combined. And the post office loves it! More money for no additional work.
Unlike some countries, the US has not devalued postage for over 100 years. The stamps are still valid for their face value. You still need 44 cents to mail a first class letter, but you can get that with any combination of stamps.
Yes, you certainly can! In the US, and most countries, stamps do not lose there value, particularly if they are less than a few years old. And as long as the combination adds up to or exceeds the necessary value, they can be combined.
Yes , as long as they equal the value of the correct postage to Germany You cant just put on a (regular first class) 45cent stamp. First, then, find out the correct postage amount for Germany.
You can buy postage online from the USPS government web site. You can purchase stamps for international postage at any post office. And many stores sell postage stamps at their customer service desks. Any US stamp can be used to mail a letter to Canada, as long as the total value equals the 75 cent cost for the first ounce of a normal envelope.