Neat historic piece that was excavated from the ground with a metal detector in wyoming. Measures close to 30 mm across. Zoom in on all 8 pictures, as i took some during sunlight, some when cloudy.Says on it "the union and the constitution war of 1861" and stamped on this side is colesburg. The other side is all stamped sergt. Enlisted june 10 1862 minneapolis, minn. Also included is some documented research of the soldier and the area he came from. Thanks for looking, feel free to ask any questions.The item "Civil War Soldiers ID Dog Tag Colesburg, IOWA 12 US Inft. Geo Potts" is in sale since Thursday, May 14, 2015. This item is in the category "Collectibles\Militaria\Civil War (1861-65)\Original Period Items\Medals, Pins & Ribbons". The seller is "goldmav" and is located in Kellogg, Iowa. This item can be shipped to United States and to Canada and to United Kingdom.