He looks like he had a very active rut season. Hope he passed on a lot of those genes. I have no experience aging deer with antlers like that but body wise he is in as peak of condition as we ever see here. To us that is old as few deer here get to 3 1/2 let alone 4 1/2 or 5 1/2. He is a wonderful deer to have in an area. Best of luck to you in this shed season and next hunting season.