http://picasaweb.google.com/110595932802324922410/Lighting?authkey=Gv1sRgCI6D9bav-ezxcQ#5473662444846250066This lamp is found at a supermarket near Rosh Pina township.
This is not a smooth 50hz flicker. This is likely that the ballast trys to reignite the lamp to stablize it (EOL behavior).
As you can see, there is NO end blackening, so why it is behave like it's reaches EOL?
Note: The flickering was much more wildly in reality then in this video.
The ballast is Eltam's rapidstart magnetic ballast for 105W T12 lamps.