For the first time in a century, in London’s National Gallery Rubens’ “Massacre of the Innocents” will be on a wall beside another Rubens, ‘Samson and Delilah”, dated by scholars as being from the same time, 1609-1610. “The juxtaposition enables visitors to play a ‘spot the same models’ game.” Rubens saved money by reusing models from one painting for the other.