This is an old quarter repeater from 1827,
six years after Napolen's death and
long before the American civil war 1861–1865.
I never tested the accuracy of it.
Saturday I wind it at 9:45 in the evening,
and checked it 11:30 next morning,
about 14 hours after.
It had gained 2 minutes !!
Actually when screwing this watch you are a bit scared...
Compared with my latest aqusition,
the "famous" seadweller,
it gains 10 s each 24 hours....
Ladies and gentlemen,
your conclusions of 181 years of evolution