Auction 309-320 - Europe & Overseas Egypt, including the Constantin Kelemenis - Day 4

Imperial Airways G-ADVB 'Corsair' Crash at Faradje, Dangu River, Belgian Congo 1939 (March 15): Commercial Envelope from "Capetown 9.III.39) to Lisbon, franked with two adhesives of which one floated off, carried by IA service NO DN 178 Durban - Southampton, plane was forced down and sank into Dangu river, re-sealed by French Post on back, bearing French special cachet 'ACCIDENT D'AVION / Corresondances receuilliers en Mer / NE PAS TAXER' in black, applied in Paris Nierinck 390315b = CHF 850.