Live action parts were filmed in the aspect ratio of 1.66:1 while animated characters in the academy ratio of 1.37:1. When the film is not correctly matted the top and bottom of animated characters seems to be out of frame making a strange visual error. This happens in all the letter-boxed TV and video versions. The DVD version corrects this error.
An English-dubbed version, retitled "Tony and the Tick-Tock Dragon", was featured on CBS Children's Film Festival (1967).