Well, It doesn't look silver.
What it does look like is a cool little modern 1900's ladies blouse button.
Remember, If you want to get it completely I'D'd here you have to post a pic of the front and the back..
It just makes it a bit easier for the crew.
Yea, its a cool little fashion button thats reproduced by Waterbury today simply called LADY or WOMAN button. Waterbury reproduces old buttons. There are several variations.