Challenger. 1939 (Apr 21-24) Covers from England to Cape Town (4) or Durban (2), two franked 1½d, the others with all or some stamps washed off, three with violet boxed bilingual "FLYING BOAT CORRESPONDENCE DAMAGED BY SEAWATER", the others without any cachet, two with South Africa Officially Sealed labels (three covers with "Challenger" cachets applied more recently to the front). Also a postcard of the plane, Photo of the crash, eight contemporary news cuttings, and the very scarce explanatory letter used to forward mail from the Johannesburg Post Office (Nierinck type e). (7+). (Image1)

1939 (Apr 23) Cover from Oldham to Wynberg franked 1½d, with hexagonal framed "T" machine mark, reverse with boxed "PLEASE ADVISE SENDER THAT / LETTERS SHOULD BE PREPAID / 1½d FOR EACH HALF OUNCE", violet bilingual boxed "FLYING BOAT CORRESPONDENCE DAMAGED BY SEAWATER", 1d + 2d postage due stamps applied. An unusual use of postage due stamps on a crash cover.

New Zealand. 1939 (Apr 11) Cover from Dunedin, New Zealand to Durban, the stamp washed off, with violet boxed bilingual "FLYING BOAT CORRESPONDENCE DAMAGED BY SEAWATER", small piece torn from upper left edge, otherwise fine and a very scarce origin for mail from this crash.

Latvia. 1939 (Apr 22) Cover from Riga to Cape Town franked Latvia 20s + 1L, carried by Deutsche Lufthansa to London and by the "Challenger" from Southampton with violet bilingual boxed "FLYING BOAT CORRESPONDENCE DAMAGED BY SEAWATER", a little roughly opened at lower edge, otherwise fine. A remarkable origin for this crash, almost certainly unique. Photo on Page 14. (Image1)