These have been on my long term "want" list... but they either tend to take such a premium over the black dial that I balk when it comes to purchase time, or they're rough as dogs. I'm negotiating with the seller of one at the moment... just wondered if anyone has a guide to what these watches are worth. Is the Racing dial worth the premium, given that I could buy a black faced MK2 and have a new service dial fitted for less? Is the racing dial a different reference? Help, as always appreciated chaps.