Button kind of day r

[metaldetectinggod]

At the old town dated to the early 1900s I found several buttons today all doubles.
Besides one it was nice enough to show, not sure what it is though.

 

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[CRUSADER]

Looks like a collar stud, but no idea what Organisation it is.

 

[Anduril]

Something to do with the Knights of Pythias.
See logo, 3rd from left, top row.

Knights of Pythias Logos and Clipart

http://www.pythias.org/clipart/fcb-tri.gif

 

[fyrffytr1]

F.C.B.stands for friendship, charity and benevolence. Can you post a picture of the back, please?