🔎 UNIDENTIFIED A small buttom

[EnvoyToTheMolePeople]

A friend of mine found this small button at an early 1900s school, does anybody recognise the symbol?

 

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[ripvanb]

I think that might be a steel backed blazer button.

 

[TheCannonballGuy]

Ripvanb said:
> I think that might be a steel backed blazer button.

You're right. The photos below show the back in non-excavated condition. It has a "pressed-&-formed rectangle" self-shank back... which dates it to the 1950s or later.