Thank you for your reply.
It is so simple yet so dam complicated! The way I am so far understanding 'Digital watches' is it is a term which I would want to reserve for watches powered by electronics or batteries, because so far I see that all mechanical watches that read time by means of aperture(s) are somehow Jump Hour/Minute. As a result I agree with your generous post/reply.
Of course mechanical watches displaying the time by means of apertures can be classified or said to have a digital display but only if I add at least another 'complication' like 'Jump'. Of course I had to be French to raise this question, as it is retained that it is the esteemed French watch-maker Blondeau (1830) who made for the king the first and one only 'Jump Hour'. Then, Joseph Pallweber (with Cortebert Comapny, French again) mass produced Jump Hour watches (pocket) in 1880
Thomas, I had the Pleasure to listening to you in October 2008. On that day, (yes it took me long ;-) I discovered your Passion of watches and your willingness to share your knowledge with ability and ease. I want to say that I am happy to know of guys like you to be somewhere on this planet. I hope that your VC will gong for a very long time.