I know it’s hard to guess just based off of a euro mount. But what would you guess for age? And what things are you taking into consideration? I can attest that when he walked out he looked old. Gray face, no real front teeth left etc.
Nothing that gnarly, but several ancient ones show up on trail cams on my place...always in the middle of the night. The older I get, the more I feel for them and imagine, especially this time of year, how many cold nights they've spent tucked up under a cedar.
...and have dominion over the fish of the sea, and over the fowl of the air, and over every living thing that moveth upon the earth. Gen. 1:28
Many years ago I built a ladder stand where nobody had hunted in 50 years or more. About dusk, here came a buck crawling on his belly from the woods to the bean field. I got him, and could tell he was ancient. Had twisted old antlers like the OP’s deer. We ate him, over time, and he was tough as boot leather. I wish I could have had someone do a good age determination.