If the photo were taken around 1885, Philip would have been about 45 years old which seems to be in keeping with the age he looks in the photo. In 1885 he was still living in Chicago and probably still running the family grocery store. All but the last (Philip M. Sullivan 1885-1959) of his 10 children would have been born by this date.
Seeing this photo gives me hope that other "old" photos of the family may still yet be located.
Source: Photo album created by Margaret Carmody Sullivan currently, 2014, held by Thomas D. Sullivan.