What’s That Grandpa? is from the Panmure Collection. There are lots of interesting things in the attic but how do they work? I bet Grandpa has all the answers! Designed And Manufactured In The UK for House Of Puzzles. The House of Puzzles is a British designer and manufacturer of high quality jigsaw puzzles. Their jigsaws feature their own unique and varied puzzle pieces to add to your enjoyment of their puzzles. Box size 38 x 27 x 5cm. Completed puzzle Size, 69 x 48cm.