Sparks 56th Auctions Spring 2026 - Stamps & Postal History of the World

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Semi Official Airmail

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Canada Semi Official Airmail

Canada Semi Official Airmail Official stamps

Canada Semi Official Airmail

Lot 206

Unitrade 90A

150.00 CAD

Sold

1903, 2c Edward VII imperforate block of eight, from the lower left corner with prominent ink smears, notably a large smear at lower left

1903, 2c Edward VII imperforate block of eight, from the lower left corner with prominent ink smears, notably a large smear at lower left and a smaller smear at the top of the King's forehead on the lower right stamp, complete original gum with various tiny inclusions from stacking during the printing process as noted on the 2025 Greene Foundation certificate, very fine.

Lot 215

Unitrade 93

400.00 CAD

Sold

1903, 10c brown lilac King Edward VII, a select never hinged example of deep colour, nicely-centred, trivial natural gum inclusion noted

1903, 10c brown lilac King Edward VII, a select never hinged example of deep colour, nicely-centred, trivial natural gum inclusion noted for strict accuracy, not detracting from this attractive and challenging stamp, very fine.

Canada Semi Official Airmail Official stamps

Lot 338

Unitrade CLP1

900.00 CAD

Sold

1918, (25c) red and black Aero Club of Canada, perforated 12, without numerals of value in lower corners, a well centred mint example with

1918, (25c) red and black Aero Club of Canada, perforated 12, without numerals of value in lower corners, a well centred mint example with large part original gum, hinge remnants, slight paper clip indentation, a scarce stamp and an iconic semi-official, only 200 printed, a large majority of which were used on 1918 special flights, attractive and very fine; ex Keays. Unitrade suggests that approximately 27 mint stamps should exist, though fewer very fine examples remain.

Lot 339

Unitrade CLP1

1,000.00 CAD

Sold

1918 (August 26), (25c) Aero Club of Canada, Toronto to Ottawa flight, affixed to reverse of cover, franked with 1c Admiral and 2c War Tax,

1918 (August 26), (25c) Aero Club of Canada, Toronto to Ottawa flight, affixed to reverse of cover, franked with 1c Admiral and 2c War Tax, tied by Toronto Canadian National Exhibition slogan cancel (25 Aug), endorsed "Aerial Mail" in manuscript at upper left, with choice framed "AERIAL MAIL / AUG 26 1918 / TORONTO, CANADA" flight cachet below, the semi-official tied by blue "AEROPLANE / AUG 25 1918 / Ottawa, Canada" handstamp, trivial aging around edges, else fresh and very fine, a desirable example carried on the second experimental flight from Toronto to Ottawa; with 2017 Greene Foundation certificate.

Lot 340

Unitrade CLP2g

160.00 CAD

Sold

1918, 25c Aero Club of Canada, on rough, off-white paper, large part original gum with small hinge remnant, a well-centred example, two

1918, 25c Aero Club of Canada, on rough, off-white paper, large part original gum with small hinge remnant, a well-centred example, two short perf at left, else a very fine of this scarcer paper type.

Lot 341

Unitrade CLP7

850.00 CAD

Sold

1928 (August 17), ($1) red on white Moose Jaw Flying Club, affixed to reverse of cover from Moose Jaw to Winnipeg, franked with 2c Admiral,

1928 (August 17), ($1) red on white Moose Jaw Flying Club, affixed to reverse of cover from Moose Jaw to Winnipeg, franked with 2c Admiral, tied by Moose Jaw machine cancel, typed "Via Special Air Mail Flight / Moose Jaw to Winnipeg" at upper left, with Moose Jaw (17 Aug) machine arrival backstamp, fresh and very fine; a scarce flight cover.

Lot 342

Unitrade CL2

120.00 CAD

Sold

1924, (25c) green Laurentide Air Service Ltd, never hinged booklet pane of two, with separated booklet cover in green, uncommonly found

Lot 343

Unitrade CL6a

140.00 CAD

Sold

1926, (25c) Jack V. Elliot Air Service, imperforate pair, unused, without gum, vertical pair, the lower stamp showing an inverted leaf at

Lot 344

Unitrade CL9d

130.00 CAD

Sold

1926, (25c) blue on yellow, Elliot-Fairchild Air Service, pane of 8 with one stamp inverted, it being the upper right on the pane, never

1926, (25c) blue on yellow, Elliot-Fairchild Air Service, pane of 8 with one stamp inverted, it being the upper right on the pane, never hinged, minor perf separation in selvedge between second and third column, noted for strict accuracy, else fresh and fine.

Lot 345

Unitrade CL13P

1,800.00 CAD

Sold

1926, Patricia Airways & Exploration, imperforate proof pane, of eight, with frame and marginal inscriptions in black, airplane and

1926, Patricia Airways & Exploration, imperforate proof pane, of eight, with frame and marginal inscriptions in black, airplane and route inscriptions omitted, without gum as prepared, on white paper, trivial wrinkles confined to margin only, a dramatic and rare proof destined for an advanced collection, very fine; ex Patricia Airways Archives.

Lot 346

Unitrade CL13Pii

1,800.00 CAD

Sold

1926, Patricia Airways & Exploration perforated proof pane in green, unused, without gum, a striking complete pane of eight on white

1926, Patricia Airways & Exploration perforated proof pane in green, unused, without gum, a striking complete pane of eight on white paper, with selvedge inscriptions at left and partial [R]ED [L]AKE at right, the design without airplane or route inscriptions, folded vertically along perforations with light wrinkle in left margin, trivial considering the rarity of this piece, quite fresh and very fine.

Lot 347

Unitrade CL13 Tr...

325.00 CAD

Sold

1926 (June 7), Patricia Airways & Exploration Co, trial printing, cover franked with 4c Admiral, affixed on back Patricia Airways &

1926 (June 7), Patricia Airways & Exploration Co, trial printing, cover franked with 4c Admiral, affixed on back Patricia Airways & Exploration Co., Style One, to Sioux Lookout first flight cover, the semi-official with Style One "RED LAKE / AIR MAIL" trial first printing overprint ("RED LAKE" measures 15.5mm wide instead of 20mm.), tied by Pine Ridge P.A. & E. company datestamp and Sioux Lookout c.d.s (8 Jul), signed by pilot Harold Anthony "Doc" Oaks, a very fine and rare trial printing; ex Algate. (Unitrade CL13 trial, AAMC CL13-trial).

Lot 348

Unitrade CL20

350.00 CAD

Sold

1926, Patricia Airways & Exploration Co, (50c) "Style 2" with Type D overprint in black, ascending, small hinge remnant, a fresh and

Lot 349

Unitrade CL20

200.00 CAD

Sold

1926, Patricia Airways & Exploration Co, (50c) "Style 2" with Type B overprint in black, ascending, affixed to reverse of cover from

1926, Patricia Airways & Exploration Co, (50c) "Style 2" with Type B overprint in black, ascending, affixed to reverse of cover from Red Lake to Sioux Lookout, cancelled by centrally-struck Sioux Lookout c.d.s., the front with 2c Admiral tied by Red Lake split-ring (9 Mar), very fine.

Lot 350

Unitrade CL20c

300.00 CAD

Sold

1926, Patricia Airways & Exploration Co, (50c) "Style 2" with Type B "5c" overprint in red, ascending, small partial remnant, a

1926, Patricia Airways & Exploration Co, (50c) "Style 2" with Type B "5c" overprint in red, ascending, small partial remnant, a well-centered example of this scarce overprint type, one of only two hundred such printed, fresh and very fine.

Lot 351

Unitrade CL25c

80.00 CAD

Sold

1926, Patricia Airways & Exploration Ltd, "Style Three", overprint type B in green, ascending, block of four on 1928 cover to R.S.

1926, Patricia Airways & Exploration Ltd, "Style Three", overprint type B in green, ascending, block of four on 1928 cover to R.S. Mason, postmarked Sioux Lookout (10 Mar), reverse with Jackson Manion split-ring (9 Mar), further franked with 1c orange Confederation pair, most attractive and very fine.

Lot 352

Unitrade CL26/26...

140.00 CAD

Sold

1927 Patricia Airways and Exploration Ltd., "Style Three", rouletted, with 5c overprinted Type C, ascending, one example in each of the

1927 Patricia Airways and Exploration Ltd., "Style Three", rouletted, with 5c overprinted Type C, ascending, one example in each of the three listed overprint colours of black, red, and green, the example in red never hinged, the balance hinged, fresh and very fine.

Lot 353

Unitrade CL27

180.00 CAD

Sold

1927 Patricia Airways and Exploration Ltd., "Style Three", rouletted, with 10c ascending Type A overprint in red and 5c descending Type C,

1927 Patricia Airways and Exploration Ltd., "Style Three", rouletted, with 10c ascending Type A overprint in red and 5c descending Type C, 34 mm overprint in black, lightly hinged, fresh and fine-very fine.