This is essentially a poster design 'From an Auto-Lithograph by Chas. Pears R.O.I', as stated on the legend below the image. It shows a ketch-rigged Thames barge and a tramp steamer heading upstream off Greenwich and a tug heading downstream. The Royal Observatory seems substantially misrepresented as a massive domed building on the hill behind and there is what looks like a plain pillar where the Wolfe statue should be if the view is after 1930, which is presumably the approximate date. The artist has also signed in the original image, lower left. Pears was a well-known illustrator doing this type of commercial work.