There were 52 cans put out in 1987 by Coke for Walt Disney Worlds 15th year. 

For the more "serious" collectors, I have found a few "variations" of some of the cans.

One example is the Diet Coke Cans.  Some of my cans have the background "lines" behind the "15 years" logo, while some do not have the lines behind the "15 years" logo.  (I have an example picture below)

I have also found some cans that have some special writting on them.  I have shown this in the picture below of 4 cans.)

Here is the breakdown of the cans  (When I actually have 2 "versions" of a can, I have listed them twice.  For the basic set, there is just 52 cans in this set.):

Coke ((NOT CLASSIC))

• Cheshire Cat

• Mad Hatter

• March Hare

• Twiddle Dee & Twiddle Dum

Coke Classic

• Mickey Mouse

• Mickey Mouse (w/ special letters)

• Minnie Mouse

• Minnie Mouse (w/ special letters)

• Pluto

• March Hare

• Cheshire Cat

• Mad Hatter

• Main Street USA

• Spaceship Earth

• World Showcase

Diet Coke

• Dumbo (w/ lines in background)

• Dumbo (w/o lines in background)

• Figaro (w/ lines in background)

• Geppetto (w/ lines in background)

• Tinker Bell (w/ lines in background)

• Tinker Bell (w/o lines in background)

• Morocco - In the World Showcase (w/ lines in background)

• Tomorrowland (w/ lines in background)

• Tomorrowland (w/o lines in background)

Cherry Coke

• Doc

• Sleepy

• Sneezy

• Snow White

• Wendy

• American Adventure

• China - In the World Showcase

• France - In the World Showcase

Diet Cherry Coke

• Mad Hatter

• Pinocchio

• Pinocchio (w/ special letters)

• Tweedle Dee & Tweedle Dum

• Frontierland

Sprite

• Bashfull

• Dopey

• Grumpy

• Happy

• Happy (w/ special letters)

• Caterpillar

• Germany - In the World Showcase

• Fantasyland

• Mexico - In the World Showcase

Diet Sprite

• Peter Pan

• Jiminy Cricket

• Captain Hook

• Cinderella's Castle

Tab

• White Rabbit

• Alice

• Adventurland

• Italy - In the World Showcase

Minute Maid (Orange)

• Donald Duck

• Huey, Dewey, & Louie

Diet Minute Maid (Orange)

• Daisy Duck

• Goofy

Minute Maid (Lemon)

• Captain Hook