I tried my best to get as much detail of that thing as I could PF! Yes..the hole goes all the way through.....yes it does have a cast line. I likened it to the same way they make dipsey's (weights) for fishing........one side of mold filled with molten metal...then the other...and close it and let cool...and voila.....a whole weight! Didn't scratch it yet......haven't tried to clean it either. It's rusty and has a pitted surface though. I used to live near the Red Bank Battle Field in National Park, N.J........and they had an exibit of cannon balls and the house left standing from the battle of Hessian Run still had some balls in the side.....and they looked very similar to this thing....though they didn't have holes and they weren't as small.

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Minds are like parachutes. They only work when they are open.

~Thomas Dewar~