I put a link to your new book. Will your book provide this kind of information for identifying the Chance patterns. I look forward to buying one of your first copies.
Many thanks for the link - the book needs as much exposure as possible.
It will include identification of every pattern, shape and colour variation, plus the dates they were introduced, and any anecdotal information that I have managed to glean over the past two years. I can't say it will be conclusive, but it's damn close!