RE: Determining deer age????
In order to age a deer, you need to pull the lower jawbone out. It is about a 4-5 inch section of 6 teeth. I have a fair amount of experience aging deer this way. If you had the jawbone, I'd age it for you if you sent it to me.
The oldest PA deer I have aged was an 8.5 year old doe my brother shot this past flintlock season. The oldest buck I have aged was 5.5. That is indeed rare for PA. Most "nice" bucks guys bring to me are 2.5-3.5 years old.