Strange button from Union camp

[parsonwalker]

never seen a ball button (I assume) like this before. What I assume to be the back has a rust spot where a shank must have been. Front(?) looks like an open flower. Hard to see, but there is some design and fill agree in the petals of the flower. Anybody seen one like this before?

 

[TNGUNS]

Can't say that I have. Really cool intricate little button though. Wish I could help. Congrats on some killer buttons you can identify though. That was an awesome haul.

 

[HutSiteDigger]

It's a floral button dating to the civil war era...