Unsure of shoulder belt plate??

[Relic Hunter]

Hi everyone
Could someone help identify this military shoulder belt plate (possibly).
Im unsure if it is a shoulder belt plate its my uneducated guess.
It looks victorian and possibly for a military band member.
Anyone seen one and can give me more information on it and tell me correctly what it is.
Im looking at purchasing it as it caught my eye and looks interesting

[kingsley]

I have seen a few variations of this badge in different sizes. I believe they were private purchases by civilian bands.

[kingsley]

Here a some others from my picture file