RCAF 404 Buffalo Squadron, MP(Maritime Patrol).  Manufactured by Crest Craft and retains yellow remnant of the label on the reverse. Estimated date from 1956 to early 60's.
<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.