Magic Lantern plank-style slide with a depiction of Old London which looks to be lithographed and hand colored. There is some red, yellow and orange coloring in the sky and behind one of the Roman style buildings, so I'm led to believe that this might show the great fire in the medieval section of London in 1666. You can see a bridge off to one side and Westminster Cathedral on the hill in the middle. The piece of wood is 7 1/4" long by 4" high and the round glass section is 3" across. It is very good condition and still has the paper label on the back. There is O.W.O stamped on one of the edges.