Seven combination colours were approved. These were:




Brown & Deep Blue




Black & Green




Deep Blue & Scarlet




Green & Indigo




Light Blue & Olive Green




Slate & Purple




Ultramarine & Grey
Note:
1. Newfoundland excluded as only a single colour used
2. Some De La Rue issues are Deep Blue and Carmine (not Scarlet)
3. Bradbury issues are Ultramarine & Grey-Black (not Grey)
4. Slate & Purple was used for all highest values

The Table below lists their frequency of use:
Bradbury
De La Rue
Waterlow
Brown & Deep Blue
13
13
13
Black & Green
1
2
2
Deep Blue and Scarlet
7
7
11
Green & Indigo
8
6
4
Light Blue & Olive Green
2
5
1
Slate & Purple
14
14
15
Ultramarine & Grey
11
9
14