I purchased this Sixth Plate Ambrotype on e-Bay about 2010. This Sottish looking chap strikes me as being a Northeast Mill Man. He wears a fine silk cravat, a patterned but functional 6 button wool vest, with a tailored jacket. His facial hair looks Scottish. His cheeks have been tastefully tinted by the photographer.
His image is on glass and placed in a case with a second plate of glass lacquered black, separated by two little strips of leather to keep the glass from touching. The lacquer is badly flaking. I have done what I could to preserve the image.