Every once in a while, we run into discontinued references or watches that are just really hard to find and that we like to call 'rare birds'. This time, we are talking about an Omega Speedmaster that captivated everyone when it was launched a few years ago and that is now discontinued and quite hard to find. Since we all know how iconic is the Omega Speedmaster Moonwatch Professional —after being part of all six lunar missions—, we'll go straight to what makes this watch so special.