The Inverted Head Four Annas was created in a Survey Office in Calcutta using a blue and red
die. As a result, the stamp had to be passed through the printing machine
twice. At least three sheets of this stamp has been known to be placed
upside down accidentally during the second pass, resulting in an
upside down head.
Three of the Inverted Head Four Annas stamps are currently on display in the Tapling Collection in
the British Museum.