[thecatspajamas]

To my eye, the Cobb photo looks to be second generation (photo of a photo), a common way of capturing an image for reproduction in the days before scanners or even photocopiers. The size and marking on the back fall into what I would typically call a "snapshot," with the slight loss of detail and shift in contrast from crisp black-and-white to a slightly muddied dark-gray-and-light-gray being what makes me think it is second generation rather than being printed from the original negative.