Types
As we recognize from the list of post offices using slogans, there are a number of variants in the form of the country's initials.
- T.P.&N.G.
- T.P.N.G.
- PNG.
In addition since 1979, there are modified datestamps, on which parts of the datestamp have been removed with a file to accommodate the correct PNG shortform.
With the majority of datestamps the country designation was totally removed.
Instead the central time slot was now given over to the PNG initials.
Although most post offices utilized only one cancelling machine, in Port Moresby, because of high postal traffic volumes, two machines were in use. With close inspection one can identify three different cancellation heads. The reason for this was that the first machine had two slightly different cancellation heads.
 |
 |
 |
In 1992 a new, noticeably larger cancellation head with a diameter of 28 mm, was introduced in Lae.
Varieties
Datestamps with two different country names are known.
There are occasions were we find covers on which parts of the cancellation have been inverted.
There are also occasions where the whole datestamp is inverted relative to the slogan.
A not too common usage of the machine cancellations took place in Port Moresby, Boroko and Goroka. The machine cancel impression without date and time was applied always to the backside of mail as a means of control and volume count.
Relief machine cancels
The stamp cancelling machines were also used with Relief date stamp if necessary. Three types are known: RELIEF No. 1, RELIEF No. 2 and RELIEF 2
 |
