The die and the plate were produced by Bradbury, Wilkinson & Co. who also recess printed the stamps.
The 1938 design shows children playing on a lawn and the designer was J. Berry.
The stamps cost 2d, 1d for postage and 1d which went towards health camps for children.
The paper was Jones paper watermarked multiple NZ and star and the stamps had a comb perforation of 14 x 13½.
A single plate was made and the plate number H1 appears in the third row in both the left and right margins.
Each sheet had a sheet number in the top right hand corner.
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.