Lot 373 Canada #CL2 1929 Sioux Lookout to Red Lake Flight Cover, mailed on May 27, with a duplex cancelling the 2c Scroll issue and a c.d.s. tying the CL2 stamp to front of cover. Back has a May 31 Sioux Lookout c.d.s. and a blue green Red Lake c.d.s. dated May 30. Back also has a purple Travel by Air, etc handstamp. Very fine. Unitrade CV$275, sold for $190 plus buyer’s premium.