απο το πολυ λιγο που ειδα νομιζω οτι το 50010 εχει παρει πολλα στοιχεια απο τα savonette watch(ρολογια τσεπης) ,89 και αλλο ενα ,μεγεθος ,balancier,18000 A/h ,εγιναν αλλαγες σε mainspring ,προσθηκη του πελατον ,εχει παρει τεχνικες λυσεις απο αλλες εποχες!!!

μαλιστα..
The escapement of the cal. 50010 is, according to IWC, "identical" to that found in the famous IWC manual wind movement cal. 89;...
...IWC´s earlier movements like C89, as well as the older pocket movements C74 and C98, were equipped with moveable hairspring stud carriers. The early automatic movements like C85 and IWC´s first ultra-thin movement C401 relied on a fixed hairspring stud and a swan neck fine regulator. The use of eccentric screws is not unknown; with the increasing use of thin movements, utilizing a flat hairspring with eccentric regulator screws became common practice. Thus the C50010 combines the best of both.
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the impressive qualities of the movement in the ref. 5001 taken on its own, that the Portuguese series were based on the savonette pocket watch movements that IWC still has in production. I feel I should admit that the exaggerated size of the cal. 50010