Photographer: C.W. Conat, Flint, Michigan
The dating of this albumen photograph, called a cdv or "cartes-de-visite", is based on 2 clues: the oval vignette style was used from 1876 to the late 1880's, and the card stock, a heavy yellow-orange color was used in the 1880's. Cdv's were 2-1/4"x4, but this one is a wee bit wider.
A very low quality original. As it turns out, this appears to be a photograph of an earlier tintype.
Work in progress.