c1880 OCCUPATIONAL CABINET CARD, BLACK AFRICAN AMERICAN PORTER w MILITARY HAT ?

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Circa 1880s Antique Occupational Cabinet Card Photograph; Depiction of black African American man in uniform (Porter?).  Crossed rifles on hat indicate some military involvement or connection.  Mount size is about 4-1/4" x 6-1/2".  Condition: light surface soiling, occasional dings, scuffs, edge wear.  Please see photos for additional condition review.  Questions Welcome!