Canada CL13i Semi-Official Airmail scarce and Very Fine (Unitrade

scarce and Very Fine (Unitrade C6c catalogue value $800)

mint single of the printed on the gum side error

both with full margins and cancelled by oval mute grids for the Seven and One Half pence letter rate to the United Kingdom (effective August 1

a very scarce imperforate upper right plate inscription block se-tenant

Never Hinged (Unitrade 96)

Canada CL13i Semi-Official Airmail scarce and Very Fine (Unitrade1926 (July 1) (25c) Patricia Airways, Style One, green route inscription; an extraordinary mint vertical strip of three, lower left corner margin Series 2 number and showing full Red Lake and inscription notes at left, displaying the rare INVERTED "RED LAKE" marginal inscription on all three and of which is additionally shifted horizontally (16mm) to one side to dramatic effect. Well centered with bright colours on fresh paper and displaying full