For sale is an artillery shell casing 90mm M19 WWII from a tank I assume that has been made into a hanging bell/gong that is very loud when rung. I am not really sure of the exact age or anything else, found it at an estate sale. It is 23 3/4" long and 5 1/4" diameter at the bottom and 3 1/2" top diameter. It weighs 11 pounds and looks to be made out of copper, if that is a solid brass jacket. There are some dings on it as you would expect from being rung.

Pictures may be seen here:
Trench Art Artillery Shell Tank Case Bell 90mm M19 WWII, Bolky Antiques, Collectibles & Much More!