1983 Topps - #482 - Tony Gwynn RC
I'm sure my viewpoint is skewed by the time period that I grew up in, but I consider this card a timeless classic. It's certainly one of the top ten rookie cards from a decade that was all about the rookie card. Gwynn was one of the most talented hitters who ever stepped to the plate, and the fact that his rookie comes from one of the most visually appealing sets of the decade made this the clear cut choice for #482 in my set. I've had this exact copy since I was around 10 years old, and I still consider it one of my favorite cards a couple of decades later.
The Ultimate Baseball Card Set, which now stands at 5 cards and counting, can be seen here.