1924 (25c) Light Green Laurentide Air Service, Rouletted at Left, a mint never hinged single, with booklet tab at left, quite fresh and extremely fine. Issued for the Rouyn to Halleybury (or return) flight on September 21, 1924. Rare in such high quality. (Image)

Unitrade $ 4,000

1924 (25c) Dark Green Laurentide Air Services Ltd. a mint never hinged booklet pane of two, with booklet selvedge, quite fresh and very fine. (Image)

Unitrade $ 487

1924 (25c) Green Laurentide Air Service Ltd. Complete Booklet, with front cover printed in green, no printing on back. The booklet contains four panes of 2, each with inter-leaving between, fresh and very fine. A scarce booklet. (Image)

Unitrade $ 2,000

1924 (25c) Green Laurentide Air Service Ltd. Complete Booklet, with front cover printed in green, plus back cover printed with "Designed and printed by / Dodd-Simpson Press Ltd. Montreal". The booklet contains four panes of 2, each with inter-leaving between, fresh and very fine. A scarce booklet. (Image)

Unitrade $ 2,000

1924 (25c) Green Laurentide Air Service Ltd. Complete Booklet, with front cover printed in dark green, plus back cover printed with "Designed and printed by / Dodd-Simpson Press Ltd. Montreal". The booklet contains four panes of 2, each with inter-leaving between, fresh and very fine. A scarce booklet. (Image)

Unitrade $ 2,400

1924 (25c) Red Laurentide Air Service Ltd. a mint never hinged single with sheet margin at right, a fresh and very fine stamp in all respects. (Image)

Unitrade $ 225

1924 (25c) Red Laurentide Air Service Ltd. a mint never hinged complete pane of 20, fresh with bright colour and immaculate gum. The pane is missing its top right corner piece of selvedge, has a contemporary pen notation in top selvedge reading "4th Issue" and has light wrinkling at lower right, still a very fine and scarce pane, especially this nice. (Image)

Unitrade $ 4,500

1924 (25c) Red Laurentide Air Service Ltd. Complete Booklet, with front cover printed in red, plus back cover printed with "Designed and printed by / Dodd-Simpson Press Ltd. Montreal". The booklet contains four panes of 2, each with inter-leaving between, fresh and very fine. A scarce booklet. (Image)

Unitrade $ 3,000

1924 (25c) Red Laurentide Air Service Ltd. Complete Booklet, with front cover printed in red, plus back cover printed with "Designed and printed by / Dodd-Simpson Press Ltd. Montreal". The booklet contains four panes of 2 with each pane showing a red at top and a light red stamp at bottom, complete with all inter-leaving between, fresh and very fine. A scarce booklet. (Image)

Unitrade $ 3,000

1924 (25c) Red Laurentide Air Service Ltd. Complete Exploded Booklet, with front cover printed in red, plus back cover printed with "Designed and printed by / Dodd-Simpson Press Ltd. Montreal". The separated booklet contains four panes of 2, with each pane showing a red at top and a light red stamp at bottom, complete with all inter-leaving between, very fine. (Image)

Unitrade $ 3,000

1925 (25c) Blue Northern Air Services with Dot at Left of Monogram Variety, a mint never hinged tête-bêche booklet pane of four with selvedge at each end, showing the "dot at left of monogram" on one of the outer stamps. The other outer stamp shows a light fingerprint on the gum, still a very fine and seldom offered pane. (Image)

Unitrade $ 1,875

1925 (25c) Blue Northern Air Services with Dot at Left of Monogram Variety, a mint never hinged, well centered and very fine. (Image)

Unitrade $ 375

1926 (25c) Red Jack V. Elliot Air Service, the two stamps, each with a different background, both mint never hinged, fresh and very fine. (Image)

Unitrade $ 270

1926 (25c) Red Jack V. Elliot Air Service, a mint never hinged tête-bêche gutter pair, with sheet selvedge at one side, quite fresh and very fine. A seldom offered item, especially this nice. (Image)

Unitrade $ 1,300

1926 (25c) Red on Yellow Elliot-Fairchild Air Service, a mint never hinged complete pane of 8, with full selvedge all around, remarkably fresh and extremely fine. (Image)

Unitrade $ 675

1926 (25c) Red on Yellow Elliot-Fairchild Air Service, a group of six mint never hinged stamps, including four singles from all four corners of the pane, the upper right one with tall "r" variety, plus a vertical pair with margin at top and bottom, with top stamp showing the tall "r" variety. All are fresh and very fine. (Image)

Unitrade $ 510

1926 (25c) Blue on Yellow Elliot-Fairchild Air Service, two mint never hinged singles with margins, the upper left corner single (position 1) showing the "filled-in wing" variety. Fresh and very fine. (Image)

Unitrade $ 210

1926 (25c) Blue on Yellow Elliot-Fairchild Air Service, a mint never hinged complete pane of 8, with the upper right corner stamp inverted, fresh and very fine. (Image)

Unitrade $ 525

1926 (25c) Red Elliot-Fairchild Air Transport Ltd. two mint never hinged singles, one from position 5 of the pane and one from position 4 showing the "white dot over O of Elliot" variety. Very fine. (Image)

Unitrade $ 262

1926 (25c) Red Elliot-Fairchild Air Transport Ltd. a complete mint never hinged vertical pane of 5, with 4th stamp showing the "white dot over o of Elliott" variety, fresh with bright colour and extremely fine. (Image)

Unitrade $ 600

1926 (25c) Deep Blue Fairchild Air Transport Ltd. a mint never hinged complete pane of 10, with second and 4th rows inverted, quite fresh with a bit of separation between two stamps, very fine. (Image)

Unitrade $ 750

1926 (25c) Deep Blue and Ultramarine Fairchild Air Transport Ltd. both in mint never hinged tête-bêche pairs, one vertical and one horizontal, very fine. (Image)

Unitrade $ 330

1926 (25c) Ultramarine Fairchild Air Transport Ltd. a mint never hinged complete pane of 10, with all stamps in column 2 inverted, quite fresh with a bit of separation between two stamps, very fine. (Image)

Unitrade $ 850

1926 (25c) Patricia Airways "Style One" Set of Four Trial Colour Proofs, all perforated on gummed canary, buff, green and deep blue paper, all four singles coming from the same position of the sheet (each showing "LAKE" in margin at right), mint never hinged, with a very light gum blemish on the buff paper, a very fine and scarce set. (Image)

Unitrade $ 2,100

1926 (25c) Patricia Airways "Style One" Set of Four Trial Colour Proofs, all perforated on gummed canary, buff, green and deep blue paper, all four singles coming from the same position of the sheet (each showing "RED" in margin at right), mint never hinged, with a very light gum blemish on the deep blue paper, a very fine and scarce set. (Image)

Unitrade $ 2,100