... though I think if there is a single company or group that does the majority of the work (however and in however many ways that might be defined) then I wonder if they could make such a statement in the same way (though not to the same degree or in exactly the same sense, but nevertheless still within the acceptable common understanding of the phrase) that Lemania could say, if it were minded, that they "made the movement" for the PP5070. I think I've seen PP catalogues in which they state that the movement is executed for PP by Nouvelle Lemania, despite PP doing the finishing and doing major changes to the escapement etc. Even so, I suspect that Lemania does more for PP in relation to the 5070 than the movement plate maker does for Dufour.