[aristarh1970]

Оригинальную ссылочку не упомню, есть на Википедии. ЦЫтата:

Movements in the bulk of IWC's lower range watches and chronographs (including the Portuguese Chronograph) use movements delivered directly from Swatch-owned ETA, previously in line with industry practice IWC purchased ebauche kits from ETA and its subsidiary Valjoux which it heavily modified but due to ETA's decision to stop selling ebauche kits to its competitors it now delivers the movements fully completed. It is no longer the case that the Caliber 30110 is a modified ETA 2892A2, and the Caliber 79230/79320/79350 is a modified ETA/Valjoux 7750. The shift began taking place in approximately 2006 according to industry sources and was entirely complete across all movements by 2010.

А на сайте самой компании и в ее каталогах смотреть смысла не вижу. Там обычные самохвалебные высокопарности. Щас глянул на вскидку, про ЕТА они... скромно умалчивают.
Ввот и спрашиваю тут знающих людей...