The Little Prince
Der kleine Prinz (original)
Adaptation of Antoine de Saint-Exupéry's novella for East German television, produced in 1965/66, not shown until 1972.
Starring Christel Bodenstein, Eberhard Esche, Inge Keller, Klaus Piontek, Wolfgang Heinz, Horst Schulze, Fred Düren, Jürgen Holtz
It's a drama and fantasy movie, and has a rating of 6.3 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from United Kingdom.