At first I thought this was a shot of Abner Doubleday. But the uniform is of a 1st Lieutenant (not Major, which Doubleday entered the war as). A fine photograph of a Civil War era officer, but likely not him.
Photo done in Whitney's Gallery, 174 Third Street, Saint Paul, Minnesota. Whitney's is known more for his photos of American Indians, but I doubt this is post-Civil War. Condition is "Used" but good condition. The item "Civil War era 1st lieutenant Minnesota" is in sale since Friday, March 26, 2021. This item is in the category "Collectibles\Militaria\Civil War (1861-65)\Original Period Items\Photographs".The seller is "oldmdcav" and is located in Zelienople, Pennsylvania. This item can be shipped to United States.