I looked all over for a date and got everything from “early 1800s” to “late 1800s” but nothing exact, so I had to make an educated guess. The first cameras practical enough to take such a photo were developed around 1840 and the excavations began in 1867.
I always heard this thing was used as target practice by the Nazis in WW2 and is why the nose is all fucked up; but this seems to contradict that. The nose is all fucked up here and it’s at most 100 years before WW2 started.