Highly unlikely that this is a proof coin. A lot of times of something is old and nice and shiny most people assume it's proof like. Anyone could have written that note on the 2x2 holder.
Very hard to tell from the pics for grading. The Obverse pics were too blurry so I didn't post them.
Feel free to shoot me some more pics if you can get a bit more clarity. However all you need to do is crop them like I did and make sure they are under 100k.