But wait, there's more!
I had a handful of these "Player's Club" cards, back in the day too. I got them from retail re-packs (the ones in the plactic cubes/boxes).
Also, I recalled seeing that logo on a different brand & searching COMC confirmed it - that stamp also shows up on 1997-98 Pinnacle Certified "Platinum Blue" (but not the Red) cards!
Same year, different brands. Point of interest, both Donruss/Leaf & Score/Pinnacle "folded" after the 1997-98 NHL card season. Maybe they were part of a redemption program created by some card show, or price guide manufacturer?
...not much help solving the case, but at least a bit more evidence to go on.