Now, for me, this one was easier than the second, if you got 20/20 in the first one you either thought it was an open folder test or need to get out more.
They could have found some cards in better condition!, I got 19/20 going down on the 1974 card of Bob Clapham, I don't have that many pre '75 cards so it was relatively easy from a collectors perspective.
Thanks for posting the link, I was shown the first one on a workmates phone and the SMH usually blocks me from viewing because I've already watched too many free articles.