🔎 UNIDENTIFIED Button Help?

[cannonball]

I found this button yesterday on a 18th Century site. It's a cast 15mm brass? button and looks similar to a rattlesnake button. The only marking on the back is a vine. I've seen this before but I can't remember where. It was found close to a half made 2lb. cannonball and a piece of grape shot. Any clues?

 

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[TheCannonballGuy]

Your beliefs about your button are correct. It dates from the latter-1700s to very-early-1800s. "Silverplating" at that time-period was Sheffield Plate. It was manufactured for Civilian usage, and has no "Rattlesnake Button" connection.