Is there info on the back of the button? If so and you need the web site to help ID the button I can see if I still have it and email or PM it to you. Most buttons were made in Pennsylvania .
Never found them that old or made of pewter. You did good. Most of mine are from the 1860's although I have one older one that has quite a bit of value.
Its funny how that little button is stealing the Thunder of that big point..haha.. I have Scoville buttons from Waterbury. "Extra Rich" I've never put anything on them. Most of mine are very stable.
Fort Brooke! I haven't heard anyone talk about that place in a long time. I've got a few artifacts from there. I lived near Tampa, 30+ years ago and my dad dug there. We used to dig there at night when they tore down an old building. Fun days for me back then.