OK, I sense the excitment is gone.
The winner? No-one, even though Danko mentioned it, but didn't state it as a guess...
Yep, it is from Great Britain. It was a Christmas aerogramme issued in 1968. Higgins & Gage # P43 or Huggins & Baker # APS-14 (whichever system you might like).
I agree with a lot of you that the drawing did NOT look British, but alas and alac it was.

So, thanks for all that played.... It is interesting what one can find in stamps/postal stationery if one looks...
