Quite fashion at the time. Worn on the dress.
Nice enamel and it's also good that it still has the attachment,
which often are missing.
I'm not sure that the later is original,
should have a hallmark in such case.
Several of these are seen in the litterature.
Exported by Vacheron&Constantin to several reatailers in USA.
A very nice watch with fine enamel.
Vacheron&Constantin hallmark on the case but surprisingly not at the movement.
Anyhow both the movement number and the case number seems to be allright for the period.
The case and the movement never have the same number on any VacheronConstantin watch.
They have made more movements than watches.
Movements were sold to other watchmakers from Breguet to different
sellers in other countries, not least Cartier was a big customer and also Tiffany.
Congrats to a nice watch