Canada 6 Cents Postage Stamp - Fort Garry Airmail

This is a vintage Canadian postage stamp with a denomination of 6 cents. The stamp features a central vignette depicting a detailed scene in shades of blue and gray. The primary imagery includes a seaplane in flight over a body of water, possibly a river or lake, with a steamboat or ship docked along the bank. Below the aircraft, there appears to be industrial activity or a populated shoreline. The top border of the stamp clearly displays 'CANADA' in capital letters. Vertical text on the left reads 'POSTES' and on the right, 'POSTAGE'. The bottom border indicates the denomination with '6 CENTS' central to the design, flanked by numeric '6's in circular frames. The stamp exhibits a classic perforated edge, suggesting it was part of a larger sheet. There is a visible cancellation mark, possibly from Fort Garry (part of Winnipeg) and a date, though difficult to fully decipher, it appears to be 'INV 3 40', strongly suggesting a cancellation date of March 1940. The overall condition shows signs of use, with the cancellation mark obscuring some of the design elements but confirming its postal usage. The colors appear somewhat muted but consistent with a used stamp of this era. The paper quality seems standard for postage stamps of the period.