DuPont gold lighter

Hello I found this many years ago and have just rediscovered it, I just noticed I can see some numbers on it which I didn’t notice before, also have just seen a stamp, so now I am wondering if this is actually real gold?? Are those serial numbers? Could that give the age as I have no idea how old it is. Also I don’t know if it works but I think something is missing from apart from the flint