Used stamps exchanges.

Good day, dear colleagues!
I would like to discuss postal envelopes in which we send postage stamps. It seems to me that a true philatelist should draw up beautifully every postal envelope, and not stick a standard self-adhesive postage stamp. I propose here to spread the most beautiful postal envelopes and also the most terrible ones. Otherwise, why all these exchanges? Probably in order to multiply the beautiful collectibles in this world.

Whoever mail this type of crappy envelopes forgot the they are stamp collectors.

Here is an example of how you should not draw up a mail envelope. Who wants to receive letters in such envelopes?
http://firstdaycovers.club/covers/RU-239

Here is an example of a great mail envelope
http://100stamps.club/stamps/PL-407

Here is a beautiful postal envelope. Such letters are pleasant to receive. What do you think?
http://100stamps.club/stamps/AT-365

http://100stamps.club/stamps/RU-1494