In the first pic, he looks like a golden sebright, but in the second pic he looks more like a black breasted red/gold cross. It is odd tho that he has hen feathering like a sebright rooster. Maybe he is a weird mutation.
It's not a full sebright. The tail, coloration and neck hackles are wrong. scgamecock shows an example of a full sebright. Quality varies A LOT among bloodlines and it is really scary seeing what some people are trying to pass off as sebrights. I saw one ad where the markings were smudgy and rooster had huge hackle feathers.
These are just three "yard" chickens that were givin to me. They run loose with one old game hen that I use for a brooder occasionally. I suspected he was crossed but wasnt sure. Its nigh impossible to find a pure blood chicken of any kind around here. Other than game that is. Im probably one of only a handful that have any pure blooded chickens at all in my area. Last time I picked up a "pure blooded" white rock(and he really looked it) a barred rock looking chicken came out of the eggs he fertilized