I didn't know the function of this sort of chain when I found this; I just thought--think--it's beautiful, and would look great hung or draped somewhere. I've figured out that it is--not surprisingly--known as spike, or spiked chain, often used as decorative barrier. This chain definitely has some age to it, making for a nice combination of soft silvery surface and spiky form.

86 inches long x 2" wide. Links measure about 2 1/2" x 1 1/8". Very nicely aged, very good condition, with light surface rusting here and there, all to the good.