A RCAF generic, double wing jacket patch from the late 1930's based on the Crest Craft back-stamp which dates from 1936-1940. It could have been used by all Squadrons and Air Crews.
<a href="//commons.wikimedia.org/wiki/User:A_much_better_place" title="User:A much better place">A much better place, Wayne Logus</a>
CC BY-SA 4.0
<p><span class="int-own-work" lang="en">Own work</span> scan of patch. 
</p>
Originally designed by Gustav Werle, founder of Crest Craft Ltd. of Saskatoon, SK.