Carte de visite portrait: unidentified Union Army officer with mustache (duplicate of page 579)

The same carte-de-visite-size albumen photograph shown on page 579 — a full-length standing studio portrait of a young man with dark hair and mustache in the dark frock coat of a U.S. Army officer (Civil War era), with shoulder straps, sword belt, sash, and saber. His plumed kepi rests on a draped pedestal at his left elbow. The two scans appear to be of the same photograph, presented here without caption. No identification visible on the page.