Civil War era Minié (or Minni) ball bullet, used in muzzle-loaded rifled muskets. The bullet is made from lead and conical in shape; there is a set of three grooves around the base; the bullet itself is lightweight and hollow, an intentional design created to cause the most damage possible. There are two notable dents on the base, one is round in shape and located just above the tri-rings, the other is linear in shape and located in the middle of the tri-rings on the opposite side; the object is completely coated in a white patina (lead carbonate) a normal sign of age in lead objects as it is a reaction most frequently caused by long-term exposure to carbon dioxide.