I only refer to the book by Anton Kreuwer's,
containing dates of the only chronograph cal VC in his list.
That is Cal 492 with the figures I left.
I also looked in"The Chronograph Bible" by G Lang and Reinhard Meis ,
Of all images, sorrowly most of them black and white, it looks most like Lemania movements,
at that time, especially the rounded bridge, where it's stamped adj to time and VC 492.
Most of others are more straight except some Valjoux and Landeron's.
But all the movements are very similar at that period of time,
and we suppose VC bought ebauches, don't we ?
So it's not more than a suggestion.
I don't think it's LeCoultre,
there is only 1(!) picture of a movement from them, in the whole book.
So take it what for what it is, a guess