A Second War No. 9 Canadian Air Observer School Patch
Black, white, red and brown embroidery on black cotton, 75 mm x 83 mm, uniform worn, slightly soiled from active use, very fine. Footnote: The airfield at Saint-Jean Airport, Saint-Jean-sur-Richelieu, Quebec was constructed in 1941 as part of the British Commonwealth Air Training Plan, with No. 9 AOS (Air Observer School) operating here from July 7, 1941 to April 30, 1945.

