Northern Territory Consolidated Acts49. Official seal
(1) A co-operative may, if authorised by its rules, have,
for use in place of its common seal outside the Territory, one or more
official seals, each of which must be a facsimile of the common seal of the
co-operative with the addition on its face of the name of every place where it
is to be used.
(2) The person affixing such an official seal must, in writing signed by the person, certify on the instrument to which it is affixed the date on which and the place at which it is affixed.
(3) A document sealed with such an official seal is to be considered to be sealed with the common seal of the co-operative.