Battle of Cowpens Dug Leftover Coin Silver Casting

A remnant of silver obviously from a casting, approximately 3 grams [.75″] found on the area of the Cowpens, South Carolina Battlefield. What was being cast is unknown-buttons, insignia? From the collection of noted collector Deborah Sprouse. 
 
The Battle of Cowpens, fought on January 17, 1781, was an engagement between American Colonial forces under Brigadier General Daniel Morgan and British forces under Sir Banastre Tarleton, as part of the campaign in the Carolinas (North and South). Tarleton’s force of 1000 British in the King’s Army were sent against 2000 men under Morgan. The Colonial forces conducted a double development of Tarleton’s force, and suffered casualties of only 20 killed and 69 wounded. Tarleton was one of around 200 British troops to escape. A small force of the Continental Army under the command of Brigadier General Daniel Morgan had marched to the west of the Catawba River, in order to forage for supplies and raise the morale of local Colonial sympathizers.