Well, I didn't put two and two together on that one :roll: a brain dead day I afraid.
I checked all of the little tags I keep from when I buy the glass and the date that was on the piece was in fact for January, however that can't be right can it, because the January design is of the really heavy cut stars, and is shown on page 72 of the Thompson book. So my date on the site is wrong - never trust those dealers
and it is in fact the August date instead like the photo that Rod uploaded.
However, looking at the butter dish and
the base of the muffin dish (it is now obvious that the top doesn't match), it doesn't have any similarities at all, not even down to the ribbing and the slight curl on the edge...
Anyway, I am off to change the site and send a polite mail to the seller.