The first Lancaster in Canada was a factory fresh plane built in England and flown to Canada in August, 1942. Pictures of that plane show no nose art or mission (bomb symbol) markings. The picture you have posted shows some nose art and maybe 16 or so "mission" bombs. (I believe a full tour at this time was 30 missions, so your photo does not seem to show a RCAF crew that had, for example "completed" their tour.)
https://www.newspapers.com/clip/4721...vancouver-sun/
That "English" Lancaster made a tour of both Canada and the US, it was in Texas in November:
https://www.newspapers.com/clip/4721...vancouver-sun/
The pilot, Clyde Pangborn, was an American.
https://en.wikipedia.org/wiki/Clyde_Pangborn
Canada did not build any Lancasters until August, 1943, when the first Canadian built Lancaster was flown to England by a RCAF crew.
https://www.warplane.com/ruhr-express.aspx
https://www.newspapers.com/clip/4723...imes-colonist/