Blue flown cachet flown British Caledonian Airways Boeing 707 from Tunis to London Gatwick. Personally Signed A. J. Williams. After Landing at Algiers with the First Army in November 1942 and narrowly failing to reach Tunis by Christmas ( When even the RAF was bogged down by Mud) he finally got there in May 1943 and had the curious luck during the final battle to discover the Bey of Tunis in his nearby and shell - shocked palace had accepted his surrender.