K&K show 2 badges.
2560 is the WW1 era badge and was worn on the Glengarry. 2561 is the later badge worn on the Blue Balmoral. This badge was also worn by the CCF on the Balmoral bonnet.
http://www.morrisonsacademyarchive.o...keyword%5D=otc
With more CCF pictures. Earliest use of the bonnet is 1950s. However as an OTC badge exists it should have predated 1940.
http://www.morrisonsacademyarchive.o...rd%5D=ccf&
Note the sporran badge appears to be a reduced sized Glengarry badge
http://www.morrisonsacademyarchive.o...s_archive_1926