Doraemon: 2112-nen Doraemon Tanjou
Japanese title: ドラえもん ２１１２年ドラえもん誕生
Type: Movie
Episodes: 1
Source: Unknown
Genres: Comedy, Fantasy
Studios: Shin-Ei Animation
Producers: TV Asahi
Duration: 30 min
Rating: PG - Children

The movie is sort of a prequel to the entire series, it showed the life of Doraemon before traveling to the 20th century: How he was made, how he was partially broken, how he lost his ears, how he met the Nobi family and decides to return to the past to help Nobita.