The documents on the board are in Russian and the guy who posted is Russian. I am hoping this clock is real and available here. Any clues to where to find it would be appreciated. I have already checked out the novelty clocks section at ebay.
I have found it helpful to do the stretching exercises my physical therapist recommends. Do some core strengthening exercises, such as the ones highlighted at The Mayo Clinic. By keeping your core strong, your back won't put itself in a position to cause that sciatica pain you are having.