This a lume shot of my British military mechanical CWC and Hamilton Geneve G10 watch. The luminous material, Tritium is long gone (well it is very very dim as the watches are form the 70s). However I notice if you were to expose the watches to strong white light, the watches do illuminate for about 1 second. So photographing the watches were a tad difficult. Timing was everything? :)
Here are the watches immediately after the lights were switch off.
I have to say it was pretty cool to find out that it will illuminate brightly for about 1 second before it fades (rapidly) away. I will find out why and update this thread.