1840 1p black, Plate 8, lettered S-K, unused with some gum, mostly covered by adhesions, margins all around, just touching at upper right corner, fine appearing example of unused Penny Black, with 2020 Sismondo certificate ("impossible to say if there are any faults hidden by the extensive adhesions. A very scarce mint stamp") (SG £16,500) cat. $12500 (Cat No. 1) (Image)

Cat. $12500, Est.US$1,500

1840 1p black, lettered H-J, watermark inverted, red MC cancel, large margins all around, excellent color and impression, tiny thin, still v.f., scarce variety, cat. $7000 (Cat No. 1c) (Image)

Cat. $7000, Est.US$1,000

1840 1p black, Plate 10, lettered K-E, margins all around, tiny nick at left, well outside the design, apparent gum creases, canceled by black MC on FL to London, with Oxford Mar 20, 1841 in black and red London 20.3.41 arrival, fine and attractive letter, with 2023 BPA certificate (Cat No. SG 2,Spec.AS66) (Image)

Est.US$500

1841 four covers or FLs, each franked with imperforate 1p red, canceled by Maltese cross with number in cross (Numbers 5, 6, 9 and 10), last one canceled (contrary to regulations) with 3 Maltese crosses, mostly fine-v.f., scarce group, high SG catalogue value (Image)

Est.US$500

1841-67 group of five FLs, including two with imperf. 1p franking, showing two Maltese crosses on each (contrary to regulations); triple rate 1843 FL franked with imperf. strip of 3x1p red (plate 25 with "triple break"),1844 FL with imperf. block of 4x1p red, plus 1867 FL from London to Lancashire, with 1p and pair of 2p, paying 5p rate (late fee), mixed condition, mostly fine and interesting lot (Image)

Est.US$250

1861 (21 Sep) small mourning cover to Pernambuco, Brazil, franked with 3x1p red and single 1856 6p lilac, tied by "390" numeral cancels of Ratheriland, with dispatch cds on back, carried on French ship via Bordeaux, Insufficiently Prepaid handstamp in red, Anglo-French Accountancy "F-20" mark (Salles 3154), charged "600r" due on delivery in red crayon, fine cover (Image)

Est.US$250

1867 5sh rose, Plate 2, duplex cancel, exceptionally well centered for issue, fresh and crisp impression, v.f., signed Scheller (Scott indicates 50% premium for examples with margins clear of design on all four sides) cat. $1200 (Cat No. 57) (Image)

Cat. $1200, Est.US$350

1869 (4 Jan) outer FL from Glasgow to Italy, attractively franked with 1p, 3p, 4p (pair) and 6p, paying 18p, all tied by "159" obliterations supported by departure cds, red PD, with London transit and Genova arrival pmks on back, fine four color combination (Cat No. 33,43,49,50) (Image)

Est.US$250

1876 (16 May) FL from Liverpool to Callao, Peru, single 1sh franking, tied by "466" numerals, with pair of 5c Peru Postage Dues added on back and torn on opening, fine usage (Image)

Est.US$250

1878 £1 slate gray, Plate 1, lettered C-C, imperforate color trial, overprinted "Specimen" (type 9), Ty. 9, plate 1, h.r., v.f., rare, SG cat. £2700 (Cat No. 75P) (Image)

Cat. £2700, Est.US$1,000

1882 £5 pale dull orange, bluish paper, lettered A-J, overprinted Specimen, h.r., well centered, good color, v.f., with 2013 Sismondo certificate, SG cat. £3000 (Cat No. 93aS) (Image)

Cat. £3000, Est.US$1,500

1902-11 KEVII 1/2-1sh, twelve different, n.h. (except 10p l.h.), fresh, fine-v.f., cat. $1523 (Cat No. 127-38) (Image)

Cat. $1523, Est.US$350

1920s Thomas De La Rue (London), four imperforate bicolor essays, three on gummed paper, v.f. (Image)

Est.US$250

1929 PUC £1 black, bottom sheet margin single, n.h., v.f., cat. $1100 (Cat No. 209) (Image)

Cat. $1100, Est.US$500

1919 (10 Nov) Inauguration of regular airmail service between London and Paris, registered flown cover flown with Aircraft Transport and Travel Ltd., v.f. and scarce (Mu. 90, Newall 19.35a) (Image)

Est.US$300

1936 First non-stop flight New York to London and return (the so-called "Ping Pong flight" by Dick Merrill and Harry Richman in Vultee V1-A Lady Peace, Sept. 1936). On the return leg, an error by Richman who had dumped 500 gallons of fuel, resulted in a near disaster, the plane ran out of gas while approaching Newfoundland, and crash-landed in a bog. Aviators were able to repair the aircraft, arriving in New York a week later, fine and rare round trip cover (Cat No. AAMC TO 1264,1266) (Image)

Est.US$500

1944 Christmas greeting airgraph form intended to be sent to Ecuador from lver Heath, Bucks, England, with 3d postage paid, then canceled, as no available service was available. A two-line handstamp applied to front of form "No Service Postage Repaid" in violet, fine (Image)

Est.US$100

1932 1st SAF to Brazil, also 8th SAF to Uruguay, franked with pair of 6p, with Berlin forwarding and Condor-Zeppelin Trans-Atlantic cachets, v.f. (Image)

Est.US$200

1933 2nd and 7th SAFs to Brazil, each with Berlin forwarding cachet, the latter with an elaborate "Graf Zeppelin label", v.f. (Image)

Est.US$250

1933 1st SAF to Buenos Aires and 5th SAF to Brazil, each with Berlin forwarding cachet, v.f. (Image)

Est.US$200

1933 (7 Sep) flown cover from Rio de Janeiro to London, with triangular Condor-Zeppelin cachet, with 1sh and 2sh6p Great Britain franking added on arrival and placed on the 7th SAF back to Brazil, with appropriate transit and arrival pmks, various cachets, minor flaws, fine and impressive double flight cover (Si.230A,232B) (Image)

Est.US$500

1933 1st SAF to Uruguay, single 1sh franking, with Berlin forwarding cachet, also 2nd SAF card to Argentina, with pair of 1sh George V, signed on back by Capt. Schiller, fine-v.f. (Image)

Est.US$250

1933 4th and 5th SAFs to Uruguay and Brazil, fine-v.f., each with Berlin forwarding cachet, fine-v.f. (Image)

Est.US$250

1933-34 4th SAF to Uruguay and 1934 Argentina Flight card to Brazil, v.f. (Image)

Est.US$200

1919 (11 July) cover to London, with return address of the Royal Canadian Bank in Vladivostok, free frank "British Mission Post Office Vladivostok" cachet, redirected on arrival, 12 Sept. 1919 arrival cds on back, fine (Image)

Est.US$250