ivan salis said:knights helm w/ griffon on top of sheild --- on sheild -- sword on left (not a upside down cross) and another symbol on right * (not sure of it) -- it looks kinda -- coat of arms ish ---a popular "general old time button" theme
looks to be a 2 piece type button--- copper front with the edge folded over a iron backing and shank--(the iron most likely rusted away over time --just leaving the front part behind) althought the pried edge might have popped the cover off the backing.
-- mid 1800 era possible ( 1860) as a mid range --say 1830 to 1890 time range most likely