Old or Modern Button?

[Surewhynot]

First post, hopefully in right spot. Found this button today by old Boy Scout Camp on Vancouver Island, BC.
Any Ideas?

 

[Surewhynot]

A little more info. It's non magnetic and very fragile. While trying to clean it more some pieces are flaking off. It is like very poorly cast metal.

 

[ticndig]

The material is pewter the button is an old one. I'm still looking into the M

 

[ajaj]

Late 18th, Early 19th century pewter. The “M” has got me, though.

aj

 

[Surewhynot]

Here is some more info that hopefully might help identify the origin of th "M".
This is where I found it:
https://www.nanaimo.ca/parks-search/Parks/43-Comox-Park-Gyro-1