Grimwade's Royal Winton chintz website gives a history of the company. Again, Susan Scott's article on Chintz is very useful.
this website, so that makes it hard to narrow down the time frame.
I'm not sure if this should be called a sweet dish. The examples of "bon bon dishes" seemed to have either feet or handles.
I'll have to have a think about where this came from - it may have been from my grandmother, I just forget.