1935, May 1st. Original issue on single watermarked paper. 'Chocolate and Blue slate'
1935, November, Experimental "Wet"Printing , Single watermark.'Chocolate and Blue slate'.
1936 April, Multiple watermark.Colours include 'Choc. and Blue slate' and 'Choc and Pale blue slate'.
1936 November. New plates.Multiple watermark. Colours now include 'Deep choc. and blue slate.' and 'Red Choc. and blue slate'. 14 line perforation.
1938 Multiple watermark.14 Comb.Colours include 'Red Brown and blue slate','Deep red brown and blue slate' and 'Bright red brown and blue slate'
1942,November.Paper and perf change. Multiple watermark. 'Chocolate and blue slate' and 'Reddish chocolate and blue slate'.
1942, November. Perforation change.Multiple watermark. 'Chocolate and blue slate'
1938 July 26th.