Many thanks for showing this and to Christine for alerting me. It does demonstrate that investing in a book (not just mine) gives people the weapons to seek out and find those elusive items.
Before this pattern cropped up I had catalogued four patterns, but the appearance of this one might make a fifth, which further indicates that a sixth may yet be possible (Chance tended to produce series of patterns in sixes). However, it is possible that a different design decorated each shape, rather than having entire suites of tableware with the same pattern, although I think this is unlikely since Robbo has two circular plates (6½in and 7½in) with different patterns.
Apart from the Green Leaves pattern being most collectable, the diamond shape is also the one which I look out for: it was an early design and did not continue much into the 1960s. Needless to say I am as green as the pattern to see two in the same photo!
Ming, although you might not be aware I am currently working on Chance Additions, which is a supplement to Chance Expressions and will include all the findings made since December 2007. There are a lot. So if you can mail me a high-resolution photo of one of the dishes, for inclusion into Chance Additions, it would be most welcome. Copyright © remains with you, of course.