1.10.1937. Far East - Great Britain. Imperial Airways "Courtier" crash mail (Phaleron bay 1.10.37). Cover from Karachi (India) to Athens. Salvaged from the sank airplane, stamps washed out, a boxed blue cachet "Εκ βυθισθέντος υδροπλάνου / De l ydravion coule" was stamped on the cover which was sealed & secured with official P.O. green labels, arr. canc. Athens (10.10.37). Hellas: CF 21.