On Fri, 19 Jun 2009 17:55:18 +0800, rodney wrote:

c. Endorse the completed receipt "AIRMAIL" and dispatch it as
unregistered mail.

Without that final criterion, we might get a fascinating snail-mail-loop:
like an email loop, only a billion times slower. :^)

--
Joshua H. McGee
San Marino, Los Angeles, California, USA, Earth
Member: APS, ATA, ISWSC, MBPC
Trade?: http://www.mcgees.org/stamp-offers/