Three plates were produced by De La Rue with the stamps in 10 rows of 12. During 1940/41, printing and/or perforating was by Waterlow.
The design shows Captain Cook landing in New Zealand at what is now the town of Gisborne.
The initial issue on 1 May 1935 was on paper with a single watermark. The stamps were perforated 13-14x13½, i.e. the top and bottom perforations on each stamp were perf 13 for half the length and perf 14 for the other half. In late 1935, the stamp was issued perf 13½x14.
In August 1936, the stamp was issued on multi watermarked paper perforated 13-14x13½. In March 1939 there was an issue perf 13½x14.
Plate 1 was handed to Waterlow in 1940 where stamps were printed and perforated 12½. The plate was returned to De La Rue in September 1941.
Stamps appeared on coarse paper perf 14x13½ in October 1942. They were from plate 1 and from new plates 2 and 3.
The three plates can be distinguished by the horizontal lines in the rigging to the left of the Marine's head.
Details are shown below.
Plate 1
Plate 2
Plate 3
In stamps from plates 2 and 3, there is a small dot to the right of Captain Cook's arm. According to Vol 2 of the RPSNZ Handbook, the dot was removed from all the impressions in plate 1. There are a significant number of re-entries in plate 1 and their occurrence is highlighted by the presence of the small dot.
Extra lines of colour developed progressively in plate 3. The deterioration is seen most clearly in the ornaments at the bottom of the stamp. Initially the ornaments are separate, later they joined up and finally in some impressions there was only a blurred mess.
The first two stages are shown. We also show a late stage in the deterioration to the figure of Captain Cook with an early impression for comparison. The horizontal line extending from Captain Cook's chin is especially prominent.
With modern reproduction and printing methods, forgeries could become a major problem. So that I could examine how good it was, I bought on eBay a so-called Maryland forgery and it is shown on the left.
It has the word FORGERY printed faintly on the back and so there is no intention to defraud. The question is could a novice be taken in by the stamp. The design is certainly a faithful reproduction, but then so are pictures in catalogues. The colour is not quite right and it is perf 11 which does not exist for this stamp.
The main give-away is the unwatermarked white paper and the fact that it is obviously not recess printed.
Quite frankly, I was disappointed in its quality. However, there could be major problems with reproductions of proof material of surface printed stamps as they are often imperforate, on unwatermarked paper or card and in different colours from the issued stamps.
The above information is taken from The Postage Stamps of New Zealand Vol 1, 2 and 4 published by the Royal Philatelic Society of New Zealand in 1938, 1950 and 1964. All scans were made by the author.