In the museum I saw behind a glass case what was listed as a Civil War Union shell jacket. It had nine federal buttons, but I had a problem with the cut of cloth, design, and color of this shell jacket. It reminded me of a British made shell jacket, or North Carolina issue, the color was near black/grey. The design looked too Confederate. The corporal strips were black with white background, very thin. It had a small pocket on the right breast. The stitching didn't look like it was done by a machine, but I didn't have my specticles so I couldn't see the fine details. The information about the jacket only said their were nearly 1 million of these jackets in Army depots after the Civil War and they were still issuing these (after modification) to Federal troops up until the 1880s. This jacket was not modified that I could see.
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David Upton