New Cover Cachet Design
On preliminary test and proficiency flights leading up to the ultimate XAP ascension, souvenir mail will be carried aboard to be distributed free of charge to our supporters who have reserved serial numbered covers to be carried to the mesosphere. Above is a sample of the first envelopes produced and carried earlier. Later editions for future test flights will each be unique. Serial numbers will be assigned to match the XAP covers. Astute collectors of balloon mail will want to have the complete set.