unknown button

[john67]

found this button at an old ball field in an early 1800s town. it was about six inches down. any ideas whats on the front would be appreciated.

 

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[fyrffytr1]

musicians uniform button.
Is there a backmark?

 

[Yak1366]

Does look like a musical symbol and the horizontal lines remind me of WWI collar disks.

Nice find, Congrats!!!