What a remarkable and exciting find and maybe the find of the decade unless of course the Monaco and Carrera version come to light then it will have some competition.
It is interesting to see how the original vision was refined to what we are now familiar with including hour markers, printing and central second hand but the vision is clear from this prototype that made it into a long running and much admired production piece. Many questions still to be answered as proposed elsewhere but dial manufacturer would be one I would like to add.
regards
Paul
www.heuerworld.com