"Polaroid forerunner": Older gentleman with 2 children an a dog (on the boy's knee).
It is not that dark as it shows up on the screen. This kind of photos made at the turn of 19th / 20th century were made with the same intention as today's Polaroid photos, to get a photo right away.
Such photos of that time are not common, this one is in fine condition, measuring 60 x 88 mm.
Older Gentleman with 2 Children an a Dog Photograph