Is this a button

We found several flat buttons like the one on the left at a old foundation .
The object on the right is the size of a half dollar
It seems to have a lead back ,its heavy The front is smooth with beveled edges.
There is no shank on the back but something was mounted to the back , slightly off center.
If it is a button how old might it be.   Thanks Mike

I would say it is a civilian bridal rosette.

I would say it is a civilian bridal rosette.

I would say a picture of the back would help

SS

Here is the back.  Thanks

Here is the back.  Thanks

Yes it looks like a button and there seems to be a pattern on the front, do you know what it's made from, it looks like pewter

SS

 Sorry i don't know what it is made of .
 Any guess on the age .

Sorry i don't know what it is made of .
 Any guess on the age .

I'm still looking but will try and find a similar back, or if I can the patertn on the front

SS

 

This ones quite similar, and has a rim, which I think yours has...also the back is like the one you found the date is 17c and is made of lead alloy.

SS