1918 25c Red and Black Aero Club of Canada on Smooth White Paper, a mint never hinged tête-bêche pair, a few negligible short perfs on one side, still a fresh and very fine item. (Image)

Unitrade $ 3,500

1918 25c Red and Black Aero Club of Canada on Rough Off-White Paper, mint never hinged, fresh and well centered, a very fine example of this scarcer paper variety. (Image)

Unitrade $ 1,700

1919 $1 Red and Blue Aero Club of Canada, with “white space between sky and red background” variety on every stamp in a mint never hinged complete pane of 10. Fresh, with bright colour and quite rare, with only 3 sheets known to have survived with gum (unknown to us as to how many of those are never hinged). A great opportunity for the Semi-Official or sheet collector. (Image)

Unitrade $ 9,625

1928 ($1) Red on White Moose Jaw Flying Club, a complete vertical pane of five mint stamps, top and two bottom stamps are very lightly hinged (almost imperceptible), leaving stamps 2 and 3 never hinged. Quite fresh and extremely rare, with only 2 known to have survived. The owner, who had a strict "never hinged criteria" looked far and wide for a never hinged example and was told by several specialists that such a "unicorn" did not exist and that this was probably the "best one out there". A great opportunity for the advanced Semi-Official collector, or seeker of the very rare. (Image)

Unitrade $ 18,000