This early cast bronze "hand cannon" was dredged-up in a fishing net in 1828 near the island of Morko off the coast of Sweden.
Bore is around 21.5 mm ( .846 inches)
I'm showing it here because it is very nicely preserved in great condition - while being dated from around 1380 to 1400 C.E. (Bronze is good stuff eh).
I read that there are some odd attempts to interpret the writings on it's surface as below ..
A fascinating and well made gun - likely that the hook underneath was used to 'steady' the gun and ease it's recoil - and the good looking head may have served as something like a foresight.. maybe.
If you'd like to learn something about the 'RUNES' on this antique and some interpretations go to "Cold Case". Link: