Wow, nice coin! Pics with slightly stronger lighting should help, but looks like a 64 or above from the pics.
Coins in those older slabs weren't graded on the market curve as they are today. I enjoy these slabs because they are graded much closer to the ANA grading standards. That's a nice coin @jfscmedic.
Yes these are the older PCGS green label holders. Back then grading standards were "stricter" as you mentioned.