What a buck! Given the history you have with pics its not hard to say 7½+....what a warrior. And its possible we under age deer often. My buddy sent the teeth off from a solid buck he killed few years back. He had no history with the buck and body wise he looked normal for the area. But looking at his teeth we knew he was old so he sent the teeth off to the Lab and the results came back 9½ year old..rare, but it does happen.