Help with identifying type of chain (for Rocky Balboa costume!)

Hello all!

I am attempting to assemble a Rocky Balboa costume, and I want it to be as accurate as possible! In Rocky II, he wears a crucifix around his neck, and I'm trying to identify the type of chain he's wearing. See the pictures below:

Z3 (from

Z2 (from



Does anyone know what kind of chain he's wearing? I know next to nothing about jewelry... doing some quick research, do you think it's more of a curb chain?
Maybe a cable chain or a box chain?

Any help would be greatly appreciated! (I do have some additional pictures if needed, though I thought these were probably the best quality ones!)

Thanks so much!