age? of older Corbin Padlock

[Bock]

On a recent trip to the outback in central Arizona I was exploring an old trash dump in the vicinity of Camp Date Creek (old 1867 army camp) set up for the protection of settlers from the native hostiles.

I found this lock in the debris field of what I thought was an outpost from the Date Creek camp 25 mi away.

Any help aging this lock may help me determine what this old camp actually may have been. Im betting the lock is not near old enough to be left from the circa 1860-70's