Ever seen something as weird as this?. Rated at 15W at 230V, the thing is, it has 3 pins, not two as your standard Bayonet cap bulb. BTW here is the pic:
Sorry the other 2 pins are out of the frame, but this is not the first time I have seen lamps with this configuration. Why would you have 3 pins on a lightbulb?. Your guess is as good as mine so, go ahead!.