No it's not a comb! These are some of the teeth of a two man 5ft cross cut saw which I found in one of my sheds many years ago, the tooth pattern is called perforated lance tooth and it would have been used to saw up large tree trunks. I will clean it up and it will become another vintage exhibit. I have no idea how old it is but think it is 1920's or 30's, it would certainly have kept two men warm using it!