How about this for an envelope cover for stamp collectors?

This is how we try to send our items by registered mail....

• We don't just put the barcode sticker on and leave it at that.
• Neither do we print off postage labels.

Collectors at CyprusStamps.com get some cool envelopes with Cyprus stamp issues on them as close to the value of the postage as possible, including of course a Cyprus Refugee stamp.