I would have to say most likely not Civil War era... Appears to be made of a light weight and course weave cotton-cotton, or cotton-wool warp.... somewhat similar to the jean cloth fabric of the civil war era but much more course/loose weave... something not normally used for and far too light weight for military use blankets. The chevron logo in the center appears to be machine stitched... most likely a company logo of some sorts.... an airline, cruise ship, moving company light weight coverlet blanket.... nothing military that Ive ever seen...