Authentic Civil War Relic Musket Ball Recovered At Devil’s Den Gettysburg Battlefield Certified By The Gettysburg Museum Of History. A certified authentic .69 Caliber Musket Ball from the Gettysburg Battlefield found at Devil’s Den the area of brutal fighting on, July 2, 1863. Devil’s Den is one of the most famous spots on the Gettysburg battlefield known for it’s natural large boulders. The relic will not be the exact same one in the photo. Some from this area will be fired, some are dropped like shown. We will pick the best one from our inventory. All Gettysburg relics were obtained before it was national Park and are 100% legal to own. There will be no more bullets or relics from this area because relic hunting is now prohibited. Comes museum documentation (COA). One side has the location and museum number one side is plain as shown in photo. Documented authentic bullets from Devil’s Den are rare! Very limited supply. Also see our listing for Devil’s Den and Gettysburg bullets and collectors boxes.