Remember Topps Tek? Topps kind of revisited that 90s madness with a six year run of sets called High Tek from 2014-2019. Like the original Tek sets, these 'cards' were printed on acetate. In 2019, there were 112 cards in the set and 9 parallel versions of each card.
Card Number 787: Topps High Tek, 2019; #105
There isn't much else on that cardback.
I don't know how popular acetate cards are. Topps seems to have pulled back from producing them the past couple of years. One advantage they have is that they don't curl like a lot of shiny regular 'chrome' cards curl over time. They also stay in place on the scanner even if the scans come out a bit odd.
Total: 787 cards