The whole thing has a rather alarming look now, as Mummy's arms and Daddy's leg have come loose, and the whole thing is a tangle of smashed limbs. Poor Mummy Polka-Dot looks terrified.
Or maybe, it's meant to convey the idea of some sort of international peace camp, where the aforesaid Parents of All Nations can join together to promote World Harmony. The picture on the back shows the somewhat stunted parents (or are they the children?) linking arms and striding out in a jolly manner.