any Ideas?

[Rick624]

found in a school yard today about quarter sized

 

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[Bruce R]

Part of one of those secret decoder buttons ?

 

[Outta Place]

What do the letters spell out in the lower picture?

 

[Back-of-the-boat]

In the first pic the crusty side I see C O R P do the rest of the letters spell out a company name?

 

[mojjax]

reeds to a pitch pipe or...... part of siren ring ?

 

[Rick624]

Don't think it's a reed it's solid.

 

[Bruce R]

A pitch pipe would be lettered for the chromatic scale, A thru G# .