On December 20, 1966, Hongkong issued an Aerogramme entire with Christmas Greetings. The Aerogramme was withdrawn on the day of issue, since three of the Chinese letters on the left-hand side of the Aerogramme were imprinted wrongly (from top-to-bottom: 1, 5, 8). Prior to withdrawal, 6000 items were allegedly sold.

Commercially used aerogramme