The Smallest Jigsaw In The World

That is what it says on the box and I have no reason to doubt it, judging by the size of the pieces ( I have put them round a one pound coin, to give an idea of size )  There are 1000 pieces in this puzzle, the finished size of which is 42 cms by 29 cms.
It is one of T's Christmas presents.
Many thanks to KangaZu for hosting Tiny Tuesday, on a subject of our own choosing.