Never have seen its like and never saw any patched holes in any L-749 I worked (multiple operators) where it would have been. Might have been unique to Qantas.
thread drift - Note the two lamps, one clear the other red. They were also on L-1049 until the wx radar was installed. The clear lamp one can understand. it put light on the ground in front of you while taxiing. But what was the red lamp for? Joke was it was a "passing light" you flashed when overtaking another aircraft. Might have been hard for the other aircraft to see it. Never found out its purpose. Anyone know?