Alex,

That is a good looking buck!  You didn’t mention the area or quality of the local habitat.  Nutrition quality is a factor in how fast deer (or humans) age.

It appears his neck merges with his chest near his brisket.  However, neither his back or belly appear to sag.  His antler bases don’t appear much larger than the diameter of his eyes.  It’s tough to accurately estimate the age of bucks when they are not broadside to the camera.  Based on what I see I estimate this buck to be 3 or 4 but am not very confident in this estimate.

Enjoy creation,

grant