Can anyone tell me what I have here?

[akar]

I still have the web pages I put up all those years ago.
I actually just looked them over and your item is listed under 1993.

Here is the Item listing: "Upper Deck-World Series Contenders/American League"
Here is the description: "3 1/2" by 5", Says "1993 World Series Contenders" Near Top and "American League" Right Under That, Also Pictured are John Olerud, Jim Abbott, Frank Thomas and Cal Ripken Jr., 5,000 Produced"

There was also a National League sheet.

Also, there were two different Chicago National sheets in 1993, one was numbered to 2000, one was un-numbered.

I can send anyone the html for the years 1987 through 1993.