The oldest known lock!
The oldest known lock dates back to 4,000 years ago and was found in ruins near Ninevah, the capital of ancient Assyria.
The predecessor of the Egyptian’s pin lock, this lock was primitive in nature. It is likely that locks older than this artifact have not been found because the most basic locks were a slab of wood that fit into a slot.
If found by archaeologists today, a slab of wood is unlikely to be recognized as a lock.