[robert_schulte]

Hi Leendert,
there were three different heavy Handley Page bombers in the Great War, the Handley Page O/100 and O/400, both very similar with the major difference being the engines (two) and its gondolas, and both having different wing spans for the top and the lower wing, and as the third type the V/1500.
This one had for both the upper and the lower wing the same wing span. As a further distinguishing mark to the earlier types, this type had four engines, 2 in each gondola in a push-pull-configuration.
Hope, this answers your question
Robert

Edit:
The V/1500 came too late to see action in the war. Only 3 were delivered before the armistice.