Envelope has quietly become the new darling of many collectors. Since the postal service require the use of a uniform standard envelope, the envelope is no longer a wide variety of old-fashioned appearance. So the past international envelopes, Chinese envelopes, large envelopes, envelopes and other ordinary people to do everything possible to become favorite objects. So, in the collection of time how should choose? 1. paste discipline, circulation special stamps old envelopes, stamps and special stamps of relatively small stickers discipline, special stamps old envelope is less. 2. Early old envelope, in line with the earlier collections more valuable features. The passage of time can be preserved envelopes now has been very scarce. 3. Old envelope has a special significance 4. "Cultural Revolution" period, old envelopes "Cultural Revolution" in the same time period as many items, some have become rare in the modern heritage, with high collection value. 5. envelopes with postage, postage printed diagram refers to the upper right corner of the envelope, which combines in one envelope and postage, it is important philatelic species. Old envelope collection is not difficult. You just save the postmark everyday life and received a clear envelope with features down to. Friends who are interested can also go to the market to buy some of the collections, but also more people to correspondence demands. So, if a long time accumulated, I believe you will be very rich collection envelopes the.