In an effort to bring everybody interesting features as much as possible, I have just scanned some old Topps Legend of Zelda cards that I own. These cards were released in 1989 and featured several popular NES games of the time. We are of course mostly interested in the Zelda ones.
I have yet to see these on any other Zelda site out there so right now I would say these are a Hidden Triforce exclusive. This link here will take you to a brief history of these cards and allow you to see all of the ones that I currently own. For those who are too lazy to click the link, here is a small sample.