The subject of this webpage relates to withdrawn postal issues such as stamps, postmarks, postal stationaries etc. In the narrow sense of the definition withdrawn postal issues can be unambiguously distinguished from so called unissued postal issues. The latter are withdrawn before their planned issue date, thus they are never being used or sold at post offices.
In contrast are the withdrawn issues only retracted on or after the day of issue and thus they are officially used in postal traffic. The withdrawal however must occur before either the end of the validity or before stocks run out.