Nautical Colonial Heavy Brass Door chain Brasscrafters Portugal NOS Steel Chain. This is one of the nicer  door chains I've ever seen it's crazy heavy duty has a metal chain steel housing looks like a really heavy solid brass made in Portugal. It was in the original bag. I unstapled it just to take pictures of it. I'll put it back in there. If there's any wear or scratches it's just from being stored thing is a new never used and extremely nice. It's pretty big. Main part of it is over 5 inches and the chain is over 11 1/2 inches with the mount It would look really nice and a large door, pretty grand looking and actually would be pretty secure.