hello i have a poitevin the very first wristwatch for men in history serial number is low with 4 digits
with repeater and independant jump second signed BPvin
my Watch is NOT a mariage Watch.
the case is originaly made this way no adding
patek vacheron lecoutre have all bought ebauche (raw movement) from bernard poitevin
made in +or- 1850
its possible this Watch has been made for military use it will give 2 advantage first possibility to attack at the same second second knowing the time into the night without use of light