【Detailed Guide】Do Stamps Expire?
No, they don't expire due to passage of time but can't be reused. Postage stamps are a piece of specified paper issued by post office or other authorized vendors to the customers who pay postage then they affix it to the address side of mail /letter/parcel to indicate the amount of postage paid.Postage stamps are the most common one, and they are sold in many ways like (booklets, coils, sheets, sheetlets)postage stamps never expire because of the passage of time, there are conditions where you can't use them again like postmarked means can't be reused.The price may increase, so then additional stamps will be required to meet the new rates. Also, Old postage stamps can be used if it is not damaged, blurred or tapped.