1931 Internal air service, flown covers including first flights (9); cover bearing first 4d air overprint, one with missing stop in overprint (S.G. 70a, £140 as stamps); cover with incorrectly dated Swakopmund c.d.s crossed out and replaced, etc., various named rubber type Air Mail cancels. (12).

1931 Imperial Airways G.B to Cape Town Christmas flight, covers from South West Africa carried on the special S.W.A Airways flight from Windhoek to Kimberley to connect with the Imperial Airways flight (15), and incoming covers from G.B, Southern Rhodesia or South Africa (4), five with named Air Mail cancels of Mariental, Karibib or Keetmanshoop. (21).

1932 (Jan.) First regular Cape Town - London Imperial Airways flight, covers flown to Kimberley by S.W.A Airways to connect with the Imperial Airways northbound flight, from Windhoek to Kimberley, Salisbury, Bulawayo, Leopoldville (flown to Broken Hill), Livingstone, Mbeya (for Zanzibar), Nairobi, Cairo (4, including covers to Ceylon, Madras and Hong Kong), Salonica, Paris (2, one to Germany) or London; or from Mariental to Pietersburg, Johannesburg, Broken Hill, Mbeya, Kisumu, Mpika or Juba, covers to places north of Bulawayo from the double crashes of "City of Basra" and "City of Delhi". Also covers from Cape Town to Keetmanshoop or Keetmanshoop to Mariental, and southbound covers from London to Windhoek or Keetmanshoop, Athens to Windhoek (2), Johannesburg to Windhoek. (30).

1932-35 First flight covers comprising 1932 New Zealand to Africa flight addressed to Windhoek; 1933 flights from Mariental or Keetmanshoop to Durban, first accelerated service cover to Greece, Calcutta to Karachi first flight cover to Windhoek, Singapore extension covers (2), Nyasaland to Southern Rhodesia flight cover to Windhoek; 1934 Keetmanshoop to Mozambique, Windhoek to Madagascar, Windhoek to India via first Karachi-Lahore flight, Australia extension covers from Mariental to Brisbane or Windhoek to Darwin or New Zealand; 1935 S.A Airways flights from Windhoek to Upington, Keetmanshoop, Johannesburg, Beaufort West, Cape Town or Bulawayo, a good lot. (20).

1932-38 Covers and cards including postcards at 2d, 1½d and 1d rates, 1934 card to Brazil intended to go by Zeppelin but underpaid and only flown as far as Berlin, surface rate covers flown by air with bilingual "THIS ARTICLE REACHES YOU / BY / AIR MAIL" (2), Air Mail postcards from the 1935 Exhibition (2) or 1937 Postal Exhibition (2), rubber air mail cancels from Karibib and Mariental, covers posted as registered letters but underpaid and delivered as ordinary letters (2), covers posted at Kimberley Aerodrome with a late fee and cancelled upon arrival at Windhoek or Mariental (2), 1935 Silver Jubilee set F.D.C, 1½d "all up" rate first flights to G.B (2) or Kenya, etc. (29).

1934 Flood emergency air mail, railway letter franked 4d from Keetmanshoop (Jan 11) delayed by the floods, delivered at Windhoek on January 29th, probably flown by air; and a cover franked 1/- from Keetmanshoop (Feb 5) to Germany, flown to Windhoek, with violet "PER / AERO SERVICES (PTY) LTD", scarce, very few covers carried. (2). Photo on Page 218. (Image1)

1935 (Aug 7/8) Special S.A Airways Ovamboland flight conveying Justice Van Zyl and members of the S.W.A Constitution Commission to Ondongua, covers flown from Windhoek to Ondongua (2, one signed by Justice Van Zyl and the pilot Capt. J.N Cooke), and a cover carried on the return flight from Ondongua to Windhoek (signed by Cooke), all fine and very scarce, very few covers carried. (3). Photo on Page 218. (Image1)

1935 (Dec 9) Cover franked 1½d, flown on a special charter flight from Windhoek to Swakopmund, with circular bilingual "THIS ARTICLE REACHES YOU / BY / AIR MAIL", arrival backstamp, very scarce, few covers carried.

1935 (Dec 9/10) Windhoek to Swakopmund charter flight, cover carried on the outward flight with circular bilingual "THIS ARTICLE REACHES YOU / BY / AIR MAIL", and a cover carried on the return flight on the following day, both franked 2d, with arrival backstamps. A scarce pair, very few covers carried. (2). Photo on Page 218. (Image1)

1935 (Dec 9/10) Windhoek to Swakopmund charter flight, cover carried on the outward flight with circular bilingual "THIS ARTICLE REACHES YOU / BY / AIR MAIL", and a cover carried on the return flight on the following day, both franked 1½d or 2d, with arrival backstamps. A scarce pair, very few covers carried. (2). Photo on Page 218. (Image1)

1937-39 First flight covers comprising 1937 Gobabis to Pretoria, Windhoek to Bloemfontein; 1938 Windhoek to Maun or Johannesburg; 1939 Johannesburg to Angola via Windhoek (2), Windhoek to Angola (2), Angola to Windhoek or Cape Town, Keetmanshoop to Cape Town and return flight, Windhoek to Ohopuho (with violet oval South African Airways cancels), Outjo to Windhoek, all fine. (14).

Feldschuhhorn. 1916 Censored cover to Spain franked by 1d strip of three each cancelled by manuscript "FHN / 15.4.16" (B1, 4000pts), backstamped at Keetmanshoop and Madrid, fine and rare. Photo on Page 210. (Image1)

Leutwein Rail. 1917 (June 21) Registered censored cover to Keetmanshoop with 1d and 2½d pairs each cancelled by violet "LEUTWEIN / RAIL" rubber datestamps (B2a, 1280pts), a third strike on the front, fine and scarce. Photo on Page 214. (Image1)

Omaheke/Okombahe. c.1920 Piece with ½d + 1½d cancelled by the rare "SANDFELD-POST / OMAHEKE / MAIL / ZANDVELDT - POST" rubber cancel (B1), and a 1921 (June 4) piece with 1d pair cancelled by violet "OKOMBAHE" rubber c.d.s (B1), neither cancel recorded on cover by Putzel. (2). Photo on Page 180. (Image1)

Outjo. 1916-17 Covers franked 2½d pair, the first to the "Bureau International de la Paix" in Switzerland cancelled with scarce "18 MRZ 1916 / Outjo" cancels in violet (B1, 2000pts), the second cover registered to Windhuk with converted c.d.s cancel (B4, 2000pts) with oval framed "R" and "OUTJO / No" registration handstamps, both fine. (2). Photo on Page 214. (Image1)

Waldau. 1917 (Feb 23) Cover to Windhuk franked ½d with an unusually clear strike of the rare damaged "WALDAU" rubber datestamp (B2, 4000pts), also tied by violet censor cachet, backstamped at Okahandja, fine. Photo on Page 214. (Image1)

Keetmanshoop - Registered Mail. 1916-21 Covers, the first bearing German registration label (with "Deutsche" crossed out), the others with differing straight line boxed or unboxed cachets, or with boxed "R / KEETMANSHOOP / No-", an unusual group. (4).

Parcel Post. 1916 British & Foreign Parcel Post Customs Declaration form from Swakopmund franked 6d + 1/- strip of four, slightly reduced at right, and a piece from a registered book post parcel posted at Windhuk franked ½d + 1d + 2d strip of three, both to a book shop in Keetmanshoop, very unusual. (2).

Postage Due Mail. 1915 Cover franked ½d, endorsed "over ½oz" with Transvaal ½d postage due pair cancelled in Keetmanshoop; and 1916-17 envelopes from Argentina used to send enclosed postcards (no longer present) with a circular hole to display the postcard stamp, both charged 3d with South Africa 3d or 1d + 2d postage due stamps cancelled at Swakopmund. (3).

Reply Coupon. 1916 South Africa 3d International Reply Coupon with converted Swakopmund c.d.s (B7), small tear in lower right margin, otherwise largely fine and unusual.

1914 (Dec 9) Stampless printed O.A.S postcard from Luderitzbucht to Cape Town with Army Base P.O 4 c.d.s and red Cape Town "POSTAGE FREE / PASSED BY / CENSOR" machine (Dec 12), only known used on this one day, very rare. Photo on Page 208. (Image1)

1915 (Aug 8) Cover from Karibib to Windhuk franked 1d with violet "Passed Censor, Karibib", very scarce. Photo on Page 208. (Image1)

1915-18 Covers with unusual censor cachets comprising 1915 registered cover from Windhoek to Switzerland bearing nine 1d stamps with blue "PASSED CENSOR / C.12" and "For Censorship / in / Cape Town"; 1917 cover from Grootfontein with violet "PASSED CENSOR / B / 100" and "Delayed by Censor 1008"; 1917 cover from Switzerland to Swakopmund with magenta "PASSED CENSOR / C.14" and large red "DETAINED", delivered in 1919; and 1918 cover from Karibib with violet circular "STOPPED / 105 / CENSOR", all with censor labels, a scarce group. (4). Photo on Page 208. (Image1)

Albrechts. 1917-18 Stampless covers from P.O.Ws in Albrechts Officers Camp all sent within S.W.A, two with Albrechts c.d.s (B3, 1000pts), the other with violet oval "COMMANDANT, P. of W. CAMP / OFFICIAL FREE / 26 / PROTECTORATE S.W AFRICA" and a censor cachet. (3).

Kanus. 1918 Covers comprising stampless cover from Kanus Internment Camp with Kanus c.d.s (B1, 600pts), cover from South Africa franked 1d and a stampless P.O.W cover from an internee in Fort Napier both to Pastor Sprengel in Kanus Camp. (3).