Circa 1865  Rare Grant Medal

looks Copper in the fields where some luster  remains

Diameter 40 mm

Only 2 mm Thick

Primitive or Crude Planchet

 Thin at the edges thicker in the center

Probably Cleaned   

By G H Lovett

Either a very Patriotic Campaign Medal or more likely a 

Unattributed Civil War Soldier Identification disc