FIGHTING ROBOT, SECOND VERSION - HORIKAWA - JAPAN
A later, and less common version of the Fighting Robot with a yellow dome and distinctive hoop or loop antennas on the shoulders.
Two variations of this loop antenna version are known. The earliest is in the 1967 Stern Brothers Christmas catalog. (top) The robot has the on-off switch at the bottom of the chest plate.
A second variation (middle) robot is in the Gertz Catalog for 1968; it lacks the on/off switch at the bottom of the chest plate.
Minor variations in the ear size have been noted. See the bottom image where the ears are conical.