I used to collect Civil War artillery projectiles in a serious way. I bought one once for my
collection that looked very similar to the one in this photo, but I was later told
by another collector that it was not a mortar ball, but a projectile for a piece
of siege artillery, like in a permanent fort, and the way this was known was
by the width of the iron in the fuse hole. It needed to be a certain width(strength)
for a mortar and another for a large siege gun. I still collect, but not artillery projectiles!
Began collecting when I was 13, and still do. Items generally have gone up a great deal, and
I wish I could go back to those early days and buy up CW items cheaply!