Cross ref Bulova movement # to the original manufacturer
I am new to this site.
Have discovered through another forum that Bulova's 7AK movement is at its heart an ETA 735.
In looking at the whole 7 series they all look ETAish.
So how many of Bulova's movements were based on brought in ebauches?
Given that they had a factory in Switzerland was it common practise for them to bring in movements and then finish them up ; send them to the USA; and then case and time them there.
Knowing how often this occurred would be helpful in sourcing parts.
I have taken the dial off a couple of 7AK's and they are stamped with the ETA mark.
Ahy info would be helpful.