This is an easy one for Disney fans, who all remember that Mickey made his on-screen debut in Steamboat Willie on November 18, 1928. Art Director Sy Thomas chose this number to represent that it's been 89 years since we first met Minnie in Steamboat Willie, as well.

The number "28" often seen on Mickey Mouse merchandise and apparel is a tribute to the year 1928, which marks Mickey’s official debut to the world. While Walt Disney and Ub Iwerks created Mickey earlier that year for the silent shorts Plane Crazy and The Gallopin' Gaucho, his "official" birthday is recognized as November 18, 1928, the premiere date of Steamboat Willie at the Colony Theatre in New York City. This was the first synchronized sound cartoon and the moment Mickey became a global sensation. Disney frequently uses "28" as a design element on "Varsity" style jackets, hats, and limited-edition collectibles to celebrate the character's heritage and the birth of the Disney empire. It serves as a nostalgic "easter egg" for fans, grounding the modern icon in his historic roots. In some cases, you might also see references to "1928" in themed areas of the parks, such as on license plates or storefront signage, all of which point back to that pivotal year in animation history when the "mouse that started it all" first took center stage.