Issue

Issue, or emission (from lat. emissio - release), in philately - the putting into circulation of a particular postage stamp as a sign of postage, as well as the totality of all copies of the circulation of this stamp printed for this within a single printing order. As a rule, postage stamps or their series are issued (issued) at a time, however, there are also cases of stage-by-stage introduction of circulations into postal circulation - both those already published and those published also stage-by-stage (with a difference of several days, months, annually or even less often). The set of copies of the stamp (stamps) put into circulation during each stage is considered their separate issue, issue - regardless of whether these issues differ from each other in their appearance, properties