The 1935 Airmail Plates
There was one plate for each value; plate 1 for the 1d, plate 2 for the 3d and plate 3 for the 6d. The plate numbers were in the top right corner along with a sheet number.
1d plate
3d plate
6d plate
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The above information is taken from The Postage Stamps of New Zealand Vol 1, published by the Royal Philatelic Society of New Zealand in 1938. All scans were made by the author.