It's the lovely illustrations by Rene Bull (1872-1942) that make this a set worth owning. He had a good eye for detail and composition. Google Images has an interesting selection of his work.
They were obviously painted quite large and the reduction to cigarette card size makes everything look very precise. Who has the original painting I wonder? Sets are still available if you look round the net but you need to check that they are originals and not reprints.