I'm certainly not an expert with hockey cards (well, with anything I wouldn't consider myself an expert) but based on this eBay listing, looking at the front and the back of the card, it doesn't appear to be an actual puck or manufactured. I'm saying this looking at the text on the puck; looks like just part of the card design. This may not help a ton, but that's just my opinion after looking at one card.
I'll never quit collecting entirely, but I am downsizing. Check out my COMC store and help me thin out what I don't want so I can buy cards that I do want. See something you like? Send me a message on here, and we can knock the price down quite a bit. I'll even take a bit of a loss if it means getting you a card you really want.