Ephemera › HS 4350 - Photograph of Fidra Island at low tide 1918 Image 1 of 1 HS 4350 - Photograph of Fidra Island at low tide 1918 £30.00 Cachet on reverse: Photographic Section, Grand Fleet Aircraft, H.Q. Turnhouse. Add To Cart Added! Cachet on reverse: Photographic Section, Grand Fleet Aircraft, H.Q. Turnhouse.