Gladstone Airways. 1927 Covers (8) and a front flown between Sudan and Kenya by Gladstone Airways including covers (5, also a front) from Kenya to England (4) or Khartoum (2) carried on the first return flight all with red "KENYA-SUDAN / 1ST / FE 15 / AIR MAIL" skeleton c.d.s; cover from G.B to Uganda intended to connect with the third flight but with cachet "Service officially arranged to /operate from London, March 10 / 1927, but abandoned owing to / breakdown of Hydroplane on / Lake Victoria."; and covers from G.B to Kenya or Uganda carried on the first resumed service following the Lake Victoria crash, with red single ring "KENYA-SUDAN / AIR MAIL" or double ring "AIR MAIL / UGANDA SUDAN" skeleton datestamps both dated Oct. 17 27. (9).

Zeppelin Mail. 1933 (Mar 25) Cover from Wadi Halfa to Santos, Brazil franked Air 10m + 41/2p, bearing "Air Mail" and "Mit Zeppelin, Europa-Sudamerika" labels, handstamped by two differing "Graf Zeppelin 1st Sudamerikafahrt 1933" cachets, backstamped at Santos (may 10), very fine. A rare Zeppelin acceptance from Sudan. Photo on Page 305. (Image1)

Zeppelin Mail. 1933 (June 27) Cover from Wadi Halfa to Santos, Brazil franked Air 5m + 2p + 3p, inscribed "Only by Graf Zeppelin", handstamped by two differing "Graf Zeppelin 4th Sudamerikafahrt 1933" cachets, backstamped at Santos (Aug 29), very fine. A rare Zeppelin acceptance from Sudan. Photo on Page 305. (Image1)

Imperial Airways. 1931 (Feb./Mar.) First flight covers (mainly special printed envelopes) carried on various stages of the first Imperial Airways service from Cairo to Mwanza, some connecting with other flights to Europe or Britain, all with first flight cachets (a few with Greek cachets). The extensive collection with covers from Wadi Halfa (13), Khartoum (21), Kosti (4), Malakal (3) or Juba (15, one from Kodok via Juba), also covers from G.B to Juba (2), Wadi Halfa, Kosti or Kareima, Mwanza to Wadi Halfa, Luxor to Juba, Cairo to Khartoum or Athens to Khartoum. A fine lot, some stages scarce. (65).

Imperial Airways. 1931-32 First flight covers comprising December 1931 experimental Christmas flight to Cape Town with covers flown on various legs from Atbara (2), Malakal, Wadi Halfa (2), Khartoum (10) or Juba (2); January 1932 first regular service to Cape Town with covers flown on various legs from Atbara, Malakal, Khartoum (8), Wadi Halfa or Juba, or flown from Cape Town to Atbara or Port Sudan, London to Malakal or Mpika to Khartoum (with incorrect "Mpika to Cape Town" first flight cachet overstruck by the "Mpika to London" cachet); and 1932 (March 5) Khartoum to Atbara cover flown on the first service at the reduced rate of 15m. A fine lot, some stages scarce. (34).

1931-53 First flight and commercial air mail covers including 1932 "INSUFFICIENTLY PAID FOR / DESPATCH BY AIR MAIL", 1933 Khartoum to Calcutta first flight and Kosti to Bangkok cover intended for the first flight but underpaid so sent surface mail, 1934 Limbe to Khartoum first flight, Khartoum to Australia first flight, 1936 first flight covers carried on the route to Nigeria (3), 1937 first flat rate covers from G.B. to Khartoum or from Khartoum to G.B unusually signed by the pilots, 1938 G.B to Khartoum first accelerated service, 1952 first Comet flights (7), etc. Also a few later covers and a couple of Paquebot covers. (67).

Air Mail Labels. 1931 Air Mail etiquettes, proof sheet of 15 etiquettes in four differing designs (also five examples of background printing without further wording in black), dated 1931 in pencil. Believed to be the sheet submitted by McCorqoudales to the Director of Sudan Posts from which the design for the etiquette issued in 1932 was chosen. Also mint blocks of four (2), strips of four and five of the issued etiquettes, the vertical strip of five with error "AIR MIAL" on the central etiquette. An interesting lot, the proof sheet unique. (5). Photo on Page 305. (Image1)

Air Mail Labels. 1931-1950s Air Mail labels (26 + 3 covers) including 1932-34 imperforate between pair and vertical strip of five containing the "MIAL" error, two 1935 covers each bearing the "BY AIR MIAL" error of spelling label and 1935 cover with label showing misplaced blue. Also a couple of Officially Sealed labels. A good lot, the "MIAL" error labels scarce on cover. (28 + 3 covers).