No apology needed, it was a fair question and is something I've not made clear on the site so I'll add it to the overview page next. Also thank you for the above photo, I do like this blue, it's quite striking isn't it?
Incidentally, the green set on eBay is a marriage, as the candlesticks and pintray are Davidson 340 but the tray is Davidson 283/4 pattern, and the pot is Davidson Jacobean pattern.