This looks like a good buy to me....and it’s green https://milwaukee.craigslist.org/cto/d/new-berlin-1971-buick-skylark-door/7359530727.html
Looks more like a 72 from the hood ornament ,rear tail lights and steering wheel?! Documentation looks correct for 71 though...I'm confused (again)
Back in the day I always like seeing those old school AAA stickers on the bumper, as that was a clue that the car was owned by a senior and probably well taken care of. I like how the granny that owned this one put it right on the dash -