Concave button?

[Kevo_DFX]

Well, I've found flat buttons, 2 piece buttons, 3 piece buttons, tombacs, and some random newer stuff, but never one quite like this. It's one-piece like a flat button but perfectly concave with a design on the obverse. What time frame is this from? What do you call them?

Thanks for lookin,
Kevo

 

[CRUSADER]

very late 18th - early 19th C

 

[vayank54]

very late 18th - early 19th C

Yep. We just always threw them in with the flat buttons.

 

[Woodland Detectors]

I still like any button with any type of design....Cool civilian button

 

[Breezie]

Yep, Turn of the Century. Nice button, Breezie