Two Napier Lion IIB
Photo at Le Bourget Field, Paris, 1926, Aircraft in the background is a 1920 Farman F.60, F-ADAY.
This aircraft crashed on Oct 21, 1926 over the English Channel, right engine lost power, 12 on board were picked up by the ship Invicta , one Pomeranian dog died, lost mail and a shipment of platinum.