A whole series of relief date stamps were called upon in this Post Office.
This Relief Dater was used in the Finance Ministry from May 1951 until 1956 at the sub-post office in Konedobu.
For the issue of its own PNG stamps on October 30, 1952, the post office at Port Moresby had two additional, slightly different, "town" date stamps, that at first were used for first day cancellations on mail.
A unique situation at Port Moresby post office is the Dead Letter Office. In this department of the Post Office, undeliverable mail is handled and an attempt is made to deliver it to the recipient. The Department has its own rubber stamp in which the date is added by a separate date stamp.