Was having a bad day of detecting all day Saturday. Nothing but shotgun shells and 22's everywhere. Only had 3 coin signals all day and they turned out to be 2 ox knobs and a grommet. Finally hit a rotted out flat button and finally this Mass (post Revolution) button. In Albert's Button book its listed as MS19 and in 1976 when the book was published, its relative value was 6 - 10 dollars. Not rare but made my day!!! Snow is coming in tonight, estimated at around 10". There goes my detector in the closet. Happy hunting to those of you who still can.