What is this button

[bigindian]

Some Sort of button, has a glass front . Idk ...

 

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[fyrffytr1]

My first thought was a ladies coat button from the mid 20th century.

 

[nhbenz]

Sometimes called a paperweight button

 

[bigindian]

I was thinking mayb a Navy P coat button. The glass front it what's throwing me off. In the 1 pic if u enlarge it u can see what looks like a ship steering wheel. Idk. Thanks though