In September 2003, I installed a motion-sensitive set of lights outside my front door. I put incandescent spotlight bulbs in it, and within a week, one of the bulbs had water in it. There is has stayed for six years, still working, the water freezing and thawing, but the quantity stays the same. Recently, its twin in the other socket burned out, but this one keeps going.
Fo gigure. Go figure.
I don't know what brand the bulb is, and if it had writing on it before to identify it, that writing is gone now.
