That is a great job and it does look like it's been there forever. Any inside shots? Any man cave items?
It looks you have stain on it. I painted my pine board barn with stain in Maine but in the heavy snow and rains it was not sufficient to prevent deterioration of the wood. Maybe in a drier climate it would have worked but I had to re-paint with oil based enamel for better protection. If you live in that type of climate it might be something you could be on the lookout for.