There are graphics for unused title screen with a "Magicians of Basketball" title in the ROM. The name was used in their promotional materials in the past, and was the subject of a 1961 lawsuit. It can be re-enabled partially with following Game Genie codes POKOTAPA + ZOSPIAZA + GOVPLALA + AOVOAEYA + ZOSOGEPO. Seems there is no proper palette for this title anymore.
There are also unused "Licensed by Nintendo" graphics in the ROM.