1918 (25c) Aero Club of Canada Semi-Official on Cover Toronto to Ottawa, franked with a strip of three 1c green Admirals on front, plus a CLP1 on back, the latter just tied by large "by / Aeroplane / AUG.26.1918 / Ottawa, Canada" flight cachet in green. The front of the cover also shows an "AERIAL MAIL / AUG 26 1918 / Toronto, Canada" boxed cachet in violet, and no other readable postal markings. Opening tears at top, still a rare cover, with very few items (35) flown. (Image)

Unitrade $ 4,500

Aug. 25, 1919 Toronto to New York First Flight Cover with CLP3, franked on front by a 3c brown Admiral tied by a AUG.25.1919 CNE Exhibition slogan to New York (endorsed "via Air Post"). Back is franked with a very fine CLP3, tied by a boxed "AERIAL MAIL / AUG 25 1919 / TORONTO, CANADA" cachet in blue, very fine. Only a small amount of mail was carried on that flight by pilot Colonel W.G. Barker, VC. AAMS #PF18. An overall very fine and clean cover. (Image)

Unitrade $ 925

Oct 1, 1924 Estevan to Winnipeg Pioneer Flight Cover, with CLP5 (with wide spacing "ew"), tied by an "Via Aeroplane / Estevan, Sask / Oct 1st, 1924" oval cancel in purple, same ties a 1c and a 2c Admirals (cpl. perf faults), and there is a third free strike on front. Winnipeg same day slogan receiver on back, alongside all-over business advertising. Very fine in all respects. (Image)

Unitrade $ 300

Two Different Larder Lake to Rouyn First Winter Flight Covers, both #10 size covers, first has a dark green third issue semi-official on back, tied by a large purple oval "Laurentide Air Service / Ltd. / Air Mail / Larder Lake, Rouyn / First Winter Flight / 1924". The stamp is postmarked Larder Lake JAN 22 / 25. The second is franked with a CL3 (faulty) with same combination of cachet and post office datestamp. An overall fine pair of covers. (Image)

Est $ 150

1924 Rouyn to Halleybury Pilot Signed Flight Cover, franked on back with a CL3, postmarked Rouyn Lake Oct 28 1924. The front shows a 3c Admiral franking, addressed to Springfield, Mass and has a neat "Via / Aeroplane Mail" winged handstamp. The back also shows the signature of the flight's pilot, very fine. (Image)

Unitrade $ 375

1924 Rouyn to Halleybury Pilot Signed Flight Cover, franked on back with a CL4, postmarked Rouyn Lake Oct 23 1924. The front of this 3c stationery cover is postmarked Rouyn Lake on same day, and is addressed to Toronto, slight edge wear, still very fine. (Image)

Unitrade $ 375

June 27-29, 1925 Northern Air Service First Flight Covers with CL5, both are 3c Admiral covers one mailed Haileybury to Rouyn and the other Rouyn to Haileybury, both are franked with a 25c blue Northern Air Service semi-official stamp on back, with despatch and receiver datestamps, one is pilot signed, very fine. (Image)

Unitrade $ 350

Three 1926 Flight Covers with CL6, CL7 and CL8 Semi Official Airmail Issues, CL6 is on back of a 3c Admiral cover, tied by Kenora MAR 6 1926 cachet in blue and Jack V. Elliot / First Flight / Red Lake to Hudson cachet in red, also tied by Rolling Port MAR.10.1926 postmark. CL7 is on back of a cover franked with an imperforate pair of 3c Admirals, semi is postmarked Red Lake APR.13.26, and there is a free strike of Rolling Portage APR.14.26. CL8 is on back of a philatelic cover addressed to a stamp dealer in Montreal, and is tied by a Rouyn SEP.30.26 c.d.s. (plus other free strikes). All three covers are clean and very fine. (Image)

Est $ 150

Group of 4 Covers Franked with CL9 to CL11, CL9 is on back of a 2c Admiral cover to a stamp dealer in Montreal, tied by a Rouyn AUG.2.1926 c.d.s. CL10is on back of a 2c Admiral cover to Montreal, tied by a AUG.12.1926 c.d.s., also signed by the pilot. Two covers are franked with the CL11, tied by Rouyn and Halleybury c.d.s. OCT.20.1926, both pilot signed on cachets, one Rouyn to Halleybury and one Halleybury to Rouyn. All 4 covers are very fine. (Image)

Unitrade $ 630

Group of Four Covers Franked with CL13, two have "Via Air Mail / DEC.18.1926 / Toronto To / Red Lake" cachet on front, and corner sheet margin CL13 stamps tied by Red Lake DEC.19.1926 datestamps. The two other covers each have their CL13s tied by a green Maple Leaf flight cachet, plus a Sioux Lookout and Red Lake datestamp on JUL.7.1926. All 4 covers are very fine, each side scanned online. (Image)

Unitrade $ 400

1926 First Flight Cover Franked with a CL13 with "Small t in TO" Variety, the very fine stamp is tied on back of cover by green Maple Leaf cachet and Red Lake datestamp on JUL.7.1926. Front has a 2c green Admiral tied by a Sioux Lookout duplex of same date, alongside a free strike of the green cachet. A very fine and scarce cover. (Image)

Unitrade $ 750

1926 Patricia Airways Cover with "FED" Handstamp in red on CL13 stamp. A Patricia Airways corner card cover flown from Toronto to Red Lake on DEC.18.1926 (with flight cachet handstamp on front and back). Back of cover shows a map of the flight path and is franked with a CL13e, tied by Red Lake postmark dated DEC.20. The red FED signature handstamp on the stamp is from F.E. Davidson, the company's financier. A rarely offered cover, very fine. (Image)

Unitrade $ 1,850

Dec. 12 1927 First Flight Cover Franked with CL14 on Front, tied by Rouyn c.d.s. and addressed to RS Mason in Rouyn, franked with a 1c orange Confederation issue tied by a Richmond Hill duplex of OCT.31.1927. Back has a Rouyn NOV.7.1927 c.d.s. A very fine and pretty cover. (Image)

Unitrade $ 325

May 23 1927 First Flight Cover Franked with CL14, on back, tied by Rouyn c.d.s. two 1c orange yellow Admirals are tied by the same c.d.s. of the same day, addressed to stamp dealer in Montreal. Very fine. (Image)

Unitrade $ 325

June 30 1927 First Flight Cover Franked with CL14, on back, tied by Rouyn c.d.s. the 2c green Admiral is tied by the same c.d.s. of the same day, addressed to Toronto, with envelope glue stains on back, else very fine. (Image)

Unitrade $ 325

Apr. 9 1927 First Flight Cover with CL13 with Very Dark Red Overprint, an unlisted variety in Unitrade, and the first we have seen. This shade of red is similar to the listed "dark red" overprint on CL19b. Very fine and rare. (Image)

Est $ 250

March 9 1928 First Flight Cover Franked with CL15, on back, tied by Red Lake datestamp. Two 1c orange Confederation issues are tied by Sioux Lookout duplex of the same day, addressed to Muscatine Iowa, very fine. (Image)

Unitrade $ 375

March 9 1928 First Flight Cover Franked with CL15c, the descending overprint in red variety, on back, tied by a Sioux Lookout c.d.s . 2c green Admiral in front is tied by Red Lake datestamp of the same day, addressed to Mr. Smith of the Patricia Airways and Exploration Ltd., in Sioux Lookout, very fine and scarce on cover. (Image)

Unitrade $ 650

March 15 1928 First Flight Cover Franked with CL15d, the descending overprint in red, with "malformed o of Lookout" variety, ideally on front of cover, tied by a Jackson Manion datestamp. Two 1c orange Confederation issues are tied by the same datestamp dated the same day, and there is a Sioux Lookout c.d.s. on back dated March 16. Very fine and exceedingly rare on cover. (Image)

Unitrade $ 1,000

August 2 1926 Two Different First Flight Covers Franked with CL18, both on back, both tied by green Maple Leaf flight cachet plus Woman Lake and Birch Lake Aug.2.1926 datestamps. 2c green Admiral stamps are tied by Toronto slogan cancels JUL.24.1926. One with a red Maple Leaf cachet on front is addressed to Woman Lake and the other with a green cachet is addressed to Birch Lake. Both very fine. (Image)

Unitrade $ 600

July 24 1926 Flown Cover Franked with Two CL18 stamps, one with the "OTT" Variety, franked with a 2c green Admiral plus a CL18, both tied to front of cover by a JUL.24.1926 Toronto slogan cancel, alongside a blue-green Maple Leaf cachet for the flight. The back of the cover has a second CL18, but with the rare "OTT" instead of "OUT" variety (CL18c, $750 on cover), tied by an AUG.2 Woman Lake c.d.s., alongside a JUL.26 Sioux Lookout c.d.s. The cover has an Anglo European Import & Export Co. Toronto corner card. A rare cover, not only for its double CL18 franking, but for the variety on the second stamp. (Image)

Est $ 500

1926 Woman Lake to Sioux Lookout Cover with "Fed" in Green on CL18, a Patricia Airways & Exploration Ltd. corner card cover with large flight map illustration on back, franked with a 2c green Admiral on front and a CL18e on back, tied by an AUG.2.1926 Sioux Lookout c.d.s. Green Maple Leaf flight cachet on front, very fine and scarce. AAMC CL18e-2600a. Both sides scanned online. (Image)

Unitrade $ 2,500

1926 Sioux Lookout to Birch Lake Cover with "Fed" in Green on CL18 with Variety, a Patricia Airways & Exploration Ltd. corner card cover, franked with a 2c green Admiral on front and a CL18e on back, showing the still unlisted "Small v in Via" variety, tied by an AUG.2.1926 Birch Lake c.d.s. and a Green Maple Leaf flight cachet, with another strike on front, very fine and scarce. AAMC CL18e-2600a. Both sides scanned online. (Image)

Unitrade $ 2,500

August 2 1926 Two Interesting First Flight Covers Franked with CL18, both franked on back, first with the still unvalued (on cover) "Small v of VIA" variety is tied by Sioux Lookout Aug.2 c.d.s. and Claraday Aug.4 datestamp and Birch Lake Aug.2 c.d.s. plus large part of the stamp selvedge showing the interesting change of value ($2 overprinted $4). Front has a map of the flight route Sioux Lookout to Red Lake. Second cover has a corner stamp showing the same value change ($2 overprinted $4) plus Sioux Lookout and Woman Lake c.d.s.'s, plus a green Maple Leaf flight cachet on front. See scans of all four sides online. (Image)

Unitrade $ 600

1927 Haileybury to Rouyn Cover Franked with CL19, mailed at Richmond Hill on JUN.17.1927 (c.d.s. tying a pair of 1c orange yellow Admirals), with Haileybury JUN.21 c.d.s. on back and Rouyn JUN.23 receiver both on back, and tying the CL19 (with red overprint) to the front of the cover. Very fine and scarce. (Image)

Unitrade $ 900