British Naval Officer's Blue & Gilt Dirk

[David]

If you scroll down a bit in this article you can see how the seven-pointed star, also shown on this blade, is used in freemasonry.
http://dcsymbols.com/officers/officers.htm
In freemasonry the rooster symbolizes the mercurial principle as explained in this article on the Chamber of Reflections.
https://en.wikipedia.org/wiki/Chamber_of_Reflection
I suspect that what looks like an iron cross on this blade is really meant to be the Cross Pattée, symbol of the Order of the Temple.
So i can connect every single symbol on this blade to a significant symbol in freemasonry, but maybe that is just a coincidence...